by M M

Cossèt Môi — The 2026 Ring Edit

Engagement Rings
We’re Loving

88 hand-selected rings across nine styles, plus six from the Maisons. Each one is chosen for the woman who knows her own mind. Our editors select for beauty, craftsmanship and the story each ring carries.

Section 01 of 09

Loving & Warm Gold Moments

Yellow gold brings warmth to every stone it holds. These settings use it with intent: wide bands, baguette channels and heirloom halos. Each one is made to be worn every day.

Vintage-style diamond halo engagement ring in yellow gold — Cossèt Môi 2026 Ring Edit

Vintage Diamond Halo Ring in 14k Yellow Gold

A scalloped halo and milgrain edges give this setting the look of an heirloom. Warm yellow gold softens every line and flatters the center stone you choose.

Setting from $4,460

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Baguette channel-set diamond engagement ring in yellow gold — Cossèt Môi 2026 Ring Edit

Baguette Channel Diamond Ring in 14k Yellow Gold

Rows of baguette diamonds sit flush in a clean channel along the band. The result is quiet, architectural light that frames any center stone in warm gold.

Setting from $7,725

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Tapered baguette three-stone engagement ring in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Tapered Baguette Three Stone Ring in 18k Yellow Gold

Two tapered baguettes draw the eye inward toward your center stone. Designed by Bella Vaughan, it pairs precise geometry with the depth of 18k gold.

Setting from $9,475

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Chevron solitaire engagement ring in yellow gold — Cossèt Môi 2026 Ring Edit

Chevron Solitaire Ring in 14k Yellow Gold

A gentle chevron dips beneath the center stone and lifts it into view. The shape also lets a wedding band sit close without a gap.

Setting from $1,395

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Three-stone engagement ring with wrapped shank in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Wrapped Shank Three Stone Ring in 18k Yellow Gold

The band wraps softly around three diamonds, as if the gold were folded by hand. It reads modern up close and timeless from across the room.

Setting from $2,250

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Split shank hidden halo engagement ring in 18k yellow gold — Cossèt Môi 2026 Ring Edit

X Split Shank Hidden Halo Ring in 18k Yellow Gold

A crossed split shank adds movement to the band. Beneath the center stone, a hidden halo of diamonds catches light only from the side.

Setting from $3,400

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Ridged dome solitaire engagement ring in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Ridged Dome Solitaire Ring in 18K Yellow Gold

Fine ridges sculpt a domed gold band with real weight on the hand. It suits the woman who wants her solitaire to feel bold and tactile.

Setting from $2,740

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Wide 5mm solitaire engagement ring in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Wide Band Solitaire Ring in 18k Yellow Gold (5mm)

A 5mm band of polished gold gives the solitaire a confident, cigar-band presence. Nothing competes with the center stone, and nothing needs to.

Setting from $2,595

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Not sure which style is yours?

The 60-second ring style quiz matches you to your signature style. Choose from Classic & Timeless, Modern & Minimalist, Vintage Romantic, Boho & Non-Traditional, Glamorous & Bold or Quiet Luxury.

Take the quiz →
Section 02 of 09

Classic Designs

The solitaire remains the ring every other style is measured against. Here the classics arrive refined: cathedral shoulders, six-prong heads, three-stone settings and a quiet pear. They are for the woman who knows the original choice is the right one.

Petite cathedral solitaire engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Petite Cathedral Solitaire Ring in Platinum

Graceful cathedral arches rise from a slim platinum band to cradle the center stone. It is the classic solitaire, refined to its essentials.

Setting from $1,635

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Six-prong solitaire engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Petite Nouveau Six-Prong Solitaire Ring in Platinum

Six slender prongs hold the diamond high on a petite platinum band. Light reaches the stone from every angle, so it sparkles all day.

Setting from $1,510

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Solitaire engagement ring with pavé basket in white gold — Cossèt Môi 2026 Ring Edit

Solitaire Ring with Pavé Basket in 14K White Gold

From above, it is a pure solitaire. From the side, a basket of pavé diamonds reveals a private detail meant for the wearer.

Setting from $2,260

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Three-stone engagement ring with pear-shaped side diamonds in platinum — Cossèt Môi 2026 Ring Edit

Classic Pear Shaped Diamond Ring in Platinum

Two pear-shaped diamonds flank the center stone in a balanced three-stone design. Platinum keeps the composition crisp, bright and enduring.

Setting from $3,550

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Oval three-stone diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Oval Three-Stone Diamond Ring in Platinum

Oval side stones echo the center and lengthen the look of the hand. Three stones, one clear line of light across platinum.

Setting from $3,775

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Three-stone engagement ring with elongated princess side diamonds in platinum — Cossèt Môi 2026 Ring Edit

Three-Stone Elongated Princess Diamond Ring in Platinum

Elongated princess-cut side stones add clean, modern edges to a classic three-stone ring. The platinum setting keeps every corner sharp.

Setting from $5,350

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Emerald-cut three-stone engagement ring with pavé band in rose gold — Cossèt Môi 2026 Ring Edit

Emerald Cut Three Stone Ring with Pavé in 14K Rose Gold

Step-cut side stones and a pavé band frame an emerald-cut center. Rose gold adds warmth to a design built on clean, parallel lines.

Setting from $3,535

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Petite micropavé trio diamond engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Petite Micropavé Trio Diamond Ring in 14k White Gold

Clusters of three tiny diamonds trace the band in a delicate rhythm. It brings quiet texture to a classic, slender silhouette.

Setting from $1,765

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Set your budget. See three rings that fit your style.
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Cossèt Môi — Private Editorial

The Bridal

Jewelry Edit

A private monthly newsletter from our jewelry editors — curating the finest engagement rings, colored gemstones, and bridal jewelry across every budget. No promotions. No noise. Just the most considered picks, delivered only to those who ask.

  • Monthly ring edit: the styles, stones, and settings our editors are loving right now
  • 2026 trend intelligence: what is actually moving the market vs. what is just noise
  • Fancy colored diamond watch: pricing, rarity alerts, and what to buy before it is gone
  • Lab vs. natural diamond: the honest editorial view, updated as the market shifts

Join the Edit

Monthly. Curated. No spam, ever. Unsubscribe in one click.

By subscribing you agree to our privacy policy. Your details are never shared.

Section 03 of 09

Nature-Inspired Designs

Leaves, vines, garlands and petals give these settings an organic line. Some pair diamonds with teal sapphire or emerald for color drawn from the garden. This section is for the woman who has always preferred the garden to the showroom.

Entangled vines side-stone engagement ring in yellow gold — Cossèt Môi 2026 Ring Edit

Entangled Vines Side Stone Ring in 14K Yellow Gold

Two gold vines twist around each other and meet at the center stone. Small diamonds along the stems catch light like morning dew.

Setting from $1,235

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Leaf solitaire engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Leaf Solitaire Ring in 14k White Gold

A single sculpted leaf curls along the band beside the center stone. It is a gentle nod to nature that stays simple enough for every day.

Setting from $1,275

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Garland sapphire and diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Garland Sapphire and Diamond Ring in Platinum

Small sapphires and diamonds alternate along the band like a woven garland. The blue accents bring a hint of color without crowding the center stone.

Setting from $3,670

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Teal Montana sapphire engagement ring with diamond leaf — Cossèt Môi 2026 Ring Edit

Teal Montana Sapphire Ring with Diamond Leaf

A teal Montana sapphire sits beside a diamond-set leaf in a design drawn from the garden. The stone shifts between blue and green in changing light.

From $1,484

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Pavé-set emerald leaf and vine ring — Cossèt Môi 2026 Ring Edit

Pavé-Set Emerald Leaf and Vine Ring

Emerald leaves trail along a slender vine of gold. It is a small, botanical piece with the rich green of a summer garden.

From $1,349

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Floral bouquet vintage-style engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Floral Bouquet Vintage-Style Ring in 14K White Gold

Diamond blossoms gather around the center stone like a small bouquet. Vintage detailing gives the setting a romantic, hand-finished feel.

Setting from $2,230

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Diamond floral halo engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Romantic Diamond Floral Halo Ring in 14k White Gold

Petal-shaped clusters of diamonds open around the center stone like a flower in bloom. It is romance expressed with real restraint.

Setting from $3,655

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Petite vintage pavé leaf diamond engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Petite Vintage Pavé Leaf Diamond Ring in 14k White Gold

Pavé leaves climb the shoulders of a petite band toward the center stone. Milgrain edges add a vintage finish to a light, natural design.

Setting from $1,910

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Live picks from our editors

More nature-inspired finds, updated daily

The Cossèt Môi Diamond Intelligence — 2026

Fancy Colored Diamonds

With fancy colored diamonds, rarity lives in the color itself. Unlike white diamonds, GIA grades them on the strength of their hue. Its grading terms include Fancy Light, Fancy Intense and Fancy Vivid. Understand the grades before you buy.

◆
Pink
Fancy Light → Fancy Vivid
Australia’s Argyle mine produced more than 90% of the world’s pink diamonds. Mining there ended in November 2020. A pink diamond is a decision, not just a purchase.
View the collection
◆
Blue
Fancy Light → Fancy Deep
Boron in the crystal structure creates the blue, which makes the stone a type IIb diamond. GIA cites the Hope Diamond as an example.
View the collection
◆
Yellow
Fancy Light → Fancy Vivid
Fancy Intense and Fancy Vivid yellow stones glow like concentrated sunlight. It is the color of optimism, worn with conviction.
View the collection
◆
Green
Fancy → Fancy Vivid
Green diamonds range from soft mint to deep forest tones. They suit the woman who was never going to choose the expected path.
View the collection
◆
Red
Fancy Red
Red sits at the far edge of the fancy color spectrum. To own one is to own something singular.
View the collection

How colored diamonds are graded

In white diamonds, color is graded from D to Z, and less color scores higher. In fancy colored diamonds, color is the point. GIA describes intensity with terms such as:

  • Fancy Light — clearly colored, a gentle entry point
  • Fancy Intense — deep, saturated color
  • Fancy Vivid — the strongest saturation

Our editors favor Fancy Intense for engagement rings. The color reads clearly on the hand.

Buying a colored diamond

Ask for a GIA colored diamond report on any significant stone. It records the color grade and states whether the color is natural.

  • Compare stones of the same grade side by side
  • Ask whether the color is natural or treated
  • Choose a metal that frames the color: rose gold for pink, platinum for blue
  • Buy from a specialist who provides full documentation
Explore colored diamond engagement rings
From the grading guide

Fancy Colored Rings

Yellow, green, black and color-change diamonds, each set as a finished ring. Every price includes the center stone.

Fancy yellow round diamond ring with pavé side stones — Cossèt Môi 2026 Ring Edit

Fancy Yellow Round and Pavé Side Stone Diamond Ring

A round fancy yellow diamond sits above a band of white pavé. The white diamonds make the yellow appear deeper and warmer.

$11,050

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Fancy yellow radiant-cut solitaire diamond ring — Cossèt Môi 2026 Ring Edit

Fancy Yellow Radiant Solitaire Diamond Ring

A radiant cut gathers the yellow color and spreads it across every facet. Set as a solitaire, the stone needs nothing else.

$16,450

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Fancy deep brownish yellow cushion solitaire diamond ring — Cossèt Môi 2026 Ring Edit

Fancy Deep Brownish Yellow Cushion Solitaire Ring

A cushion-cut diamond in deep, honeyed tones sits in a simple solitaire. The color is warm, unusual and quietly sophisticated.

$12,800

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Chameleon pear diamond halo engagement ring — Cossèt Môi 2026 Ring Edit

Chameleon Pear Diamond Halo Ring

Chameleon diamonds can shift color with heat and light. This pear-shaped stone sits within a white halo that frames the change.

$20,050

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Fancy black round three-stone diamond ring — Cossèt Môi 2026 Ring Edit

Fancy Black Round Three-Stone Diamond Ring

Three round black diamonds create a striking, graphic line on the hand. It is the boldest alternative to the classic white three-stone.

$8,550

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Fancy vivid yellow cushion diamond halo ring — Cossèt Môi 2026 Ring Edit

Fancy Vivid Yellow Cushion Diamond Halo Ring

Fancy Vivid is the most saturated yellow grade a diamond can earn. A white halo intensifies the color of this cushion-cut stone.

$17,090

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Fancy yellow radiant three-stone diamond ring — Cossèt Môi 2026 Ring Edit

Fancy Yellow Radiant Three-Stone Diamond Ring

A radiant fancy yellow diamond sits between two white side stones. The three-stone layout gives the color room and balance.

$25,050

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Fancy green yellow cushion diamond ring — Cossèt Môi 2026 Ring Edit

Extraordinary Fancy Green Yellow Cushion Diamond Ring

Green and yellow meet in a single cushion-cut diamond. It is the highest-priced ring in this selection.

$51,600

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Section 04 of 09

Celebrity Favorites

Celebrity rings shape what brides ask for, season after season. Taylor Swift’s ring, announced in August 2025, is an elongated old-mine cushion in 18k yellow gold, per JCK. The settings here share that red-carpet language: halos, three-stone designs and elongated shapes. Read the full celebrity ring guide →

Cushion halo engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Empire Cushion Halo Ring in Platinum

A generous cushion halo and a pavé band give this Bella Vaughan design true red-carpet scale. It is glamour with immaculate craftsmanship.

Setting from $12,375

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Hila diamond halo engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Hila Diamond Halo Ring in Platinum

Designed by Bella Vaughan, the Hila surrounds the center stone with a bright, sculpted halo. It is made for the woman who enjoys being noticed.

Setting from $14,720

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Emerald-cut three-stone halo diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Emerald Three Stone Halo Diamond Ring in Platinum

Each of the three emerald-cut stones sits within its own diamond halo. The effect is cinematic, polished and unmistakably statement-making.

Setting from $14,830

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Three-stone pear halo diamond engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Three-Stone Pear Halo Diamond Ring in 14k White Gold

Pear-shaped side stones, each in its own halo, flank the center diamond. The design draws the eye upward and adds sparkle at every angle.

Setting from $4,790

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Ballerina halo engagement ring with pear, marquise and round diamonds — Cossèt Môi 2026 Ring Edit

Pear, Marquise and Round Ballerina Halo Ring in 14k White Gold

Pear, marquise and round diamonds swirl around the center like a ballerina’s skirt. It is a playful, mid-century silhouette with plenty of light.

Setting from $2,780

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Double halo diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Double Halo Gala Diamond Ring in Platinum

Two rings of diamonds surround the center stone and multiply its presence. A pavé platinum band completes the most dramatic setting in this section.

Setting from $6,765

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Escalating baguette side-stone engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Escalating Baguette Side Stone Ring in 14K White Gold

Baguettes rise step by step toward the center stone like a staircase of light. The geometry feels Art Deco and entirely current.

Setting from $4,790

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Bezel-set emerald-cut side-stone engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Bezel Set Emerald Cut Side Stone Ring in 14K White Gold

Bezel-set emerald-cut diamonds line the shoulders in smooth white gold frames. The look is sleek, modern and easy to wear every day.

Setting from $4,300

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Cossèt Môi

Look as good as the ring.

The complete pre-wedding beauty guide. Skin, hair, makeup, and confidence — structured across 21 days, designed for the woman who wants to feel like herself, only more so. Every bride deserves this level of preparation and care.

Still deciding on your style?

Six signature styles, one 60-second quiz. Find out whether you are Classic & Timeless, Modern & Minimalist, Vintage Romantic, Boho & Non-Traditional, Glamorous & Bold or Quiet Luxury.

Take the quiz →
Section 06 of 09

Our Curated Favorites

Every ring in this section made our editors stop. These pieces make their case through restraint and craft. Two lab-grown diamond settings sit alongside the designer pieces, chosen on the same terms.

Three-stone trapezoid diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Vintage Three Stone Trapezoid Diamond Ring in Platinum

Trapezoid side stones frame the center with the precision of Art Deco design. It is the most considered setting in our curated edit.

Setting from $27,485

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Three-stone engagement ring with half-moon side diamonds in platinum — Cossèt Môi 2026 Ring Edit

Moon Three Stone Ring in Platinum

Half-moon diamonds curve gently against the center stone in this Bella Vaughan design. The silhouette is soft, balanced and unusual.

Setting from $6,355

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Knife-edge micropavé diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Knife Edge Micropavé Diamond Ring in Platinum

A knife-edge band catches light along its sharp ridge, set with micropavé diamonds. It looks delicate yet holds a strong, defined line.

Setting from $4,465

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Halo diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Heiress Halo Diamond Ring in Platinum

A fine halo and a pavé band surround the center stone with steady brilliance. It is a refined halo that stays elegant rather than loud.

Setting from $3,585

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Petite three-stone lab-grown diamond engagement ring in rose gold — Cossèt Môi 2026 Ring Edit

Petite Three-Stone Lab-Grown Diamond Ring in 14k Rose Gold

Lab-grown side diamonds give this petite three-stone ring brightness at a gentle price. Rose gold adds a soft, flattering warmth.

Setting from $1,700

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Marquise-cut lab-grown three-stone engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Marquise Cut Lab-Grown Diamond Three Stone Ring in Platinum

Lab-grown marquise diamonds flank the center stone and lengthen the hand. Platinum gives this modern three-stone design lasting strength.

Setting from $1,970

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Pavé contour diamond engagement ring in 18k white gold — Cossèt Môi 2026 Ring Edit

Pavé Contour Diamond Ring in 18K White Gold

The pavé band dips softly beneath the center stone, ready to nest with a wedding band. It is practical design wrapped in steady sparkle.

Setting from $2,415

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Pavé twist diamond engagement ring in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Pavé Twist Diamond Ring in 18K Yellow Gold

Two strands of gold, one set with pavé diamonds, twist toward the center stone. The pairing of polished and sparkling gold feels effortless.

Setting from $2,860

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Section 07 of 09

Blue-Tinted Beauties

Blue has long been the bride’s something blue. This section moves from royal sapphire to rare fancy blue diamonds. In blue diamonds, boron within the crystal creates the color, according to GIA. Every ring here makes that tradition permanently your own.

Tilted pear fancy intense blue diamond engagement ring with split shank — Cossèt Môi 2026 Ring Edit

Tilted Pear Fancy Intense Blue Diamond Split Shank Ring

A pear-shaped natural blue diamond sits at a gentle tilt between parallel bands. It is a collector’s piece built around its center stone.

From $114,371

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Round blue sapphire Celtic knot engagement ring — Cossèt Môi 2026 Ring Edit

Round Blue Sapphire Celtic Knot Ring

Celtic knots wind along the band toward a round blue sapphire. The knot has no beginning and no end, which suits an engagement ring well.

From $3,545

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Oval blue sapphire and pear diamond three-stone engagement ring — Cossèt Môi 2026 Ring Edit

Oval Blue Sapphire and Pear Diamond Three Stone Ring

An oval blue sapphire sits between two pear-shaped diamonds. The mix of shapes and colors makes a classic three-stone feel personal.

From $2,474

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Floral halo engagement ring with round fancy intense blue diamond — Cossèt Môi 2026 Ring Edit

Floral Halo Round Fancy Intense Blue Diamond Ring

A natural blue diamond rests within a halo of white diamond petals. Soft, romantic detail frames the color.

From $144,341

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Emerald-cut blue sapphire engagement ring with diamonds — Cossèt Môi 2026 Ring Edit

Emerald-Cut Blue Sapphire Ring with Diamonds

Long, step-cut facets show the full depth of the blue sapphire. Diamonds on either side add brightness without distracting from the color.

From $10,286

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Round blue sapphire three-stone engagement ring in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Round Blue Sapphire Three Stone Ring in 18K Yellow Gold

Blue sapphire side stones flank the center diamond in warm 18k gold. Blue and gold together give the ring a rich, regal tone.

Setting from $2,585

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Sapphire and diamond double halo engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Sapphire and Diamond Double Halo Ring in Platinum

An inner halo of sapphires and an outer halo of diamonds frame the center stone. It is a modern answer to the classic sapphire cluster.

Setting from $4,460

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Three-row sapphire and diamond engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Three Row Sapphire and Diamond Ring in 14k White Gold

Three slim rows, one set with sapphires, wrap the band in alternating color. The ring reads like a stack, but wears as one piece.

Setting from $3,150

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Section 08 of 09

Pretty in Pink

Pink diamonds, rubies and pink-hued stones fill this section. Australia’s Argyle mine produced more than 90% of the world’s pink diamonds, per Rio Tinto. Mining there ended in November 2020. No new pink diamonds will come from Argyle.

Vintage-style cushion ruby solitaire engagement ring — Cossèt Môi 2026 Ring Edit

Vintage Style Cushion Ruby Solitaire Ring

A cushion-cut ruby sits in a vintage-inspired setting with fine detailing. Ruby’s deep red makes this solitaire warm, rich and personal.

From $4,193

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Princess-cut ruby three-stone engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Princess Cut Ruby Three Stone Ring in Platinum

Princess-cut rubies flank the center stone in a crisp platinum setting. The red accents add color and meaning to a classic three-stone ring.

Setting from $4,215

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Fancy deep pink pear diamond halo ring — Cossèt Môi 2026 Ring Edit

Fancy Deep Pink Pear Diamond Halo Ring

A pear-shaped natural pink diamond in a Fancy Deep tone sits within a bright halo. The setting is designed to show every shade.

$19,850

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Fancy light pink brown radiant diamond side-stone ring — Cossèt Môi 2026 Ring Edit

Fancy Light Pink Brown Radiant Diamond Side-Stone Ring

A radiant-cut diamond in soft pink-brown tones rests between white side stones. The color feels warm, subtle and entirely its own.

$25,090

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Cushion red ruby and diamond halo ring — Cossèt Môi 2026 Ring Edit

Cushion Red Ruby and Diamond Halo Ring

A cushion-cut red ruby glows inside a halo of white diamonds. The contrast of red and white makes the ruby’s color the clear focus.

$10,050

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Burmese ruby marquise diamond solitaire ring — Cossèt Môi 2026 Ring Edit

Burmese Ruby Marquise Diamond Solitaire Ring

A Burmese ruby sits as the centerpiece, with marquise diamonds adding length and light. The red reads clearly against white diamonds.

$6,250

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Unheated pigeon blood ruby three-stone ring — Cossèt Môi 2026 Ring Edit

No-Heat Pigeon Blood Ruby Three-Stone Ring

An unheated Mozambique ruby in pigeon blood red anchors this three-stone ring. The stone is graded by GRS, a respected gem laboratory.

$98,245

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Fancy deep orangy pink diamond enamel ring — Cossèt Môi 2026 Ring Edit

Fancy Deep Orangy Pink Diamond Enamel Ring

A GIA-graded Fancy Deep orangy pink diamond sits within a finely enameled setting. It is a true collector’s ring and the highest-priced piece here.

$249,990

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Section 09 of 09

Vintage Dreams

Art Deco geometry, milgrain edges and hand engraving define these settings. They draw on some of the most detailed techniques in fine jewelry. Each ring feels as if it has always existed.

Vintage-inspired halo diamond engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Vintage Inspired Halo Diamond Ring in 14k White Gold

A milgrain-edged halo and fine detailing give this Zac Posen design a vintage soul. The proportions keep it light and wearable.

Setting from $3,130

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Vintage baguette halo diamond engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Vintage Baguette Halo Diamond Ring in 14k White Gold

Baguettes and rounds form a geometric halo with clear Art Deco roots. Designed by Zac Posen, it balances structure and sparkle.

Setting from $2,800

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Milgrain lace pavé vintage-style engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Milgrain Lace Pavé Vintage-Style Ring in Platinum

Lace-like openwork and milgrain beading run along a pavé platinum band. It recalls Edwardian jewelry with a clean, modern finish.

Setting from $3,250

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Glamour halo vintage-style engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Glamour Halo Vintage-Style Ring in 14K White Gold

A detailed halo and engraved shoulders give this ring old-Hollywood charm. It is vintage glamour designed for daily wear.

Setting from $2,770

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Milgrain navette vintage-style engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Milgrain Navette Vintage-Style Ring in Platinum

Navette shapes, edged with milgrain, frame the center stone on a platinum band. The design draws on early twentieth-century jewelry.

Setting from $2,280

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Hand-engraved micropavé diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Hand-Engraved Micropavé Diamond Ring in Platinum

Hand engraving decorates the sides of a micropavé platinum band. It is a quiet detail that rewards a closer look every time.

Setting from $2,315

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Art Deco fleur-de-lis pavé engagement ring in white gold — Cossèt Môi 2026 Ring Edit

Art Deco Fleur-de-Lis Pavé Vintage-Style Ring in 14K White Gold

Fleur-de-lis motifs in pavé diamonds flank the center stone. The design pairs Art Deco symmetry with a gentle, approachable price.

Setting from $1,190

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Compass point diamond accent engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Compass Point Diamond Accent Ring in Platinum

Small diamonds sit at the four compass points around the center stone. It is a subtle vintage detail with a lovely sense of direction.

Setting from $2,110

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More vintage finds

Art deco and vintage picks, curated live

The Top of the Edit

The James Allen Collection

These are the highest-priced designs in the James Allen collection, now offered through Blue Nile. Each setting shows the house’s work in pavé, halos and side stones. Choose your center stone, and the ring becomes yours alone.

Pear-shaped whirling diamond halo engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Fancy Pear Shape Whirling Diamond Halo Ring in Platinum

Diamonds spiral around the center stone in a whirling halo of pear and round shapes. It is the most dramatic setting in the collection.

Setting from $6,750

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Diamond vine side-stone engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Diamond Vine Side Stone Ring in Platinum

A vine of diamonds climbs the platinum shoulders toward the center stone. It is nature-inspired design at its most refined.

Setting from $6,335

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Diamond nest side-stone engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Diamond Nest Side Stone Ring in Platinum

Clusters of diamonds gather around the center like a carefully built nest. The setting feels organic, protective and full of light.

Setting from $5,220

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Round diamond three-stone engagement ring with pavé in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Round Diamond Three Stone Ring with Pavé in 18K Yellow Gold

Three round diamonds rise above a pavé band of rich 18k gold. It is the classic three-stone, finished with real generosity.

Setting from $5,050

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Trio micropavé diamond engagement ring in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Trio MicroPavé Diamond Ring in 18K Yellow Gold

Three rows of micropavé diamonds wrap the band in 18k yellow gold. The effect is luminous, layered and easy to wear.

Setting from $5,030

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Round split band diamond halo engagement ring in 18k yellow gold — Cossèt Môi 2026 Ring Edit

Round Split Band Diamond Halo Ring in 18K Yellow Gold

A diamond halo sits above a band that splits into two pavé strands. The open design adds width and presence without weight.

Setting from $4,860

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Oval-cut side-stone diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Oval Cut Side Stone Diamond Ring in Platinum

Oval side stones mirror an oval center and lengthen the line of the hand. Platinum gives the design a cool, polished finish.

Setting from $4,705

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Asscher-cut side-stone diamond engagement ring in platinum — Cossèt Môi 2026 Ring Edit

Asscher Cut Side Stone Diamond Ring in Platinum

Asscher-cut side stones bring stepped, mirror-like facets to the shoulders. It is a structured, Art Deco design for the confident buyer.

Setting from $4,600

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Editorial Selection

From the Maisons

These rings are featured for the authority their houses hold in fine jewelry. Cossèt Môi has no affiliate arrangement with any of these houses.

Six-prong solitaire engagement ring in platinum — Cossèt Môi editorial image

The Tiffany® Setting Engagement Ring in Platinum

Tiffany & Co.’s six-prong solitaire lifts the diamond to let in light from every side. Six slim prongs keep every eye on the stone.

Starting from $1,650

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Cushion-cut diamond ring with pavé band in platinum — Cossèt Môi editorial image

Tiffany Forever Cushion-Cut Ring with Pavé Band

A cushion-cut diamond rests on a delicate pavé platinum band. The design is soft in outline and generous in sparkle.

Starting from $3,600

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Heart-shaped diamond halo ring in platinum — Cossèt Môi editorial image

Tiffany Soleste® Heart-Shaped Halo Ring

A heart-shaped diamond sits within a halo of brilliant diamonds. It is romance expressed with exceptional precision.

Starting from $49,600

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Cushion-cut yellow diamond ring in 18k yellow gold — Cossèt Môi editorial image

Tiffany True® Ring with Cushion-Cut Yellow Diamond

A cushion-cut yellow diamond rises above a diamond band of 18k yellow gold. The pairing makes the yellow tone glow warmer still.

Starting from $8,650

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Round brilliant diamond solitaire ring — Cossèt Môi editorial image

Laurence Graff Signature Diamond Ring

Graff’s signature setting keeps the focus on one round brilliant diamond. A fine white gold band lets the stone lead.

Price on request

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Vintage-style cushion diamond ring in platinum — Cossèt Môi editorial image

The Kwiat Setting Vintage Style Ring with Cushion Diamond

Kwiat’s vintage-style setting frames a cushion diamond with fine platinum detailing. Its fine lines give it an heirloom spirit.

Price on request

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Sources. Argyle mine output and closure: Rio Tinto. Boron and type IIb blue diamonds, the Hope Diamond: GIA. Fancy color grading terms: GIA 4Cs. Taylor Swift’s engagement ring: JCK. James Allen as a Blue Nile collection: Rapaport.