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Achieve the high-fashion look you desire at a fraction of the cost, allowing you to invest in quality 10k, 14k or 18k gold pieces that last a lifetime.

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Yellow Gold 4 CT Princess Cut Moissanite Diamond Solitaire Engagement Solid Gold Ring for Women
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4 CT Princess Cut Moissanite Diamond Solitaire Engagement Solid Gold Ring for Women

From $2,198.45
From $2,198.45
Yellow Gold 3 Carat Princess Cut Moissanite Diamond GRA Certified Infinity Crossroads of Love Ring
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3 Carat Princess Cut Moissanite Diamond GRA Certified Infinity Crossroads of Love Ring

From $2,691.99
From $2,691.99
Yellow Gold 14k Solid Gold 1.5 Carat Round Cut Moissanite Diamond GRA Certified Engagement Ring
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14k Solid Gold 1.5 Carat Round Cut Moissanite Diamond GRA Certified Engagement Ring

From $1,588.81
From $1,588.81
Yellow Gold 2.43 Carat Cushion Cut Moissanite Diamond Celtic Spark GRA Certified Engagement Ring
♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦
2.43 Carat Cushion Cut Moissanite Diamond Celtic Spark GRA Certified Engagement Ring

From $2,096.15
From $2,096.15
Yellow Gold 2.50 TCW Round Cut Moissanite Diamond 14kt Solid Gold Solitaire Four Prong Ring
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2.50 TCW Round Cut Moissanite Diamond 14kt Solid Gold Solitaire Four Prong Ring

From $2,029.57
From $2,029.57
Yellow Gold 2.72 TCW Oval Cut Moissanite Diamond 14kt Solid Gold Double-Row Station Band Ring
♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦ ♦ EXCLUSIVE ♦
2.72 TCW Oval Cut Moissanite Diamond 14kt Solid Gold Double-Row Station Band Ring

From $1,978.67
From $1,978.67
Yellow Gold 2.33 TCW Emerald Cut Moissanite Diamond 14kt Solid Gold Cluster Trilogy Engagement Ring
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2.33 TCW Emerald Cut Moissanite Diamond 14kt Solid Gold Cluster Trilogy Engagement Ring

From $1,792.55
From $1,792.55
Yellow Gold 1.98 TCW Round Cut Moissanite Diamond 18kt Solid Gold Flower Set Halo Wedding Ring
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1.98 TCW Round Cut Moissanite Diamond 18kt Solid Gold Flower Set Halo Wedding Ring

From $1,571.29
From $1,571.29

Explore Our Jewelry

Discover what true luxury means—a harmonious blend of impeccable design and enduring quality.

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Lab Grown Diamond Rings
Lab Grown Diamond Rings
Moissanite Engagement Rings
Moissanite Engagement Rings
Diamond Earrings
Diamond Earrings
Necklace
Necklace
Diamond Bracelets
Diamond Bracelets
14kt Solid Gold 2.93 TCW Princess Cut Lab Grown Halo Engagement Ring for Women
Why Kōsei Moissanites

At the heart of our brand is the belief that jewelry is meant to tell your story. By fusing timeless elegance with modern craftsmanship, we ensure that every item in our collection is a perfect reflection of quality and refined beauty.

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Timeless Engagement Rings

Engagement Rings

Experience the luxury of moissanite diamonds with exceptional sparkle, sustainability, and affordability.

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Emerald Cut Three-stone Moissanite Classic "past, present, and future" Engagement Ring Emerald Cut Three-stone Moissanite Classic "past, present, and future" Engagement Ring
Emerald Cut Three-stone Moissanite Classic "past, present, and future" Engagement Ring

From $304.49
From $304.49
Round Cut Moissanite with Multi Stone Vintage Engagement Ring for Women Round Cut Moissanite with Multi Stone Vintage Engagement Ring for Women
Round Cut Moissanite with Multi Stone Vintage Engagement Ring for Women

From $268.45
From $268.45
Three Stone Round Cut Moissanite with Baguette Accents Trilogy Engagement Ring Three Stone Round Cut Moissanite with Baguette Accents Trilogy Engagement Ring
Three Stone Round Cut Moissanite with Baguette Accents Trilogy Engagement Ring

From $250.43
From $250.43
Three-stone Round Cut Center Moissanite with Triangular Side Stones Engagement Ring Three-stone Round Cut Center Moissanite with Triangular Side Stones Engagement Ring
Three-stone Round Cut Center Moissanite with Triangular Side Stones Engagement Ring

From $243.22
From $243.22
Emerald-cut Moissanite Diamond Solitaire Ring for Engagement and Wedding Emerald-cut Moissanite Diamond Solitaire Ring for Engagement and Wedding
Emerald-cut Moissanite Diamond Solitaire Ring for Engagement and Wedding

From $304.49
From $304.49
Round Brilliant Cut Moissanite Solitaire Sterling Silver Engagement Ring for Women Round Brilliant Cut Moissanite Solitaire Sterling Silver Engagement Ring for Women
Round Brilliant Cut Moissanite Solitaire Sterling Silver Engagement Ring for Women

From $250.43
From $250.43
Three Stone Princess Cut Moissanite Trilogy Sterling Silver Engagement Ring Three Stone Princess Cut Moissanite Trilogy Sterling Silver Engagement Ring
Three Stone Princess Cut Moissanite Trilogy Sterling Silver Engagement Ring

From $304.49
From $304.49
Modern Cushion Cut Moissanite with Trillion-cut Three-stone Engagement Ring Modern Cushion Cut Moissanite with Trillion-cut Three-stone Engagement Ring
Modern Cushion Cut Moissanite with Trillion-cut Three-stone Engagement Ring

From $304.49
From $304.49
Truly Yours
Craft Your Vision Into Reality

We offer fully customizable designs, from diamond cut to precious metal, allowing you to create a ring as unique as your love. Our team is ready to help you design a ring that's distinctly yours, whether you're starting with a clear direction or exploring what feels right for you.

Design Your Own Ring
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Sustainable heirlooms
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Timeless pieces to treasure forever
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Ethical sourcing and manufacturing
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Sustainable heirlooms
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Timeless pieces to treasure forever
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Ethical sourcing and manufacturing
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Sustainable heirlooms
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Timeless pieces to treasure forever
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Ethical sourcing and manufacturing
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Sustainable heirlooms
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Timeless pieces to treasure forever
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Ethical sourcing and manufacturing
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Sustainable heirlooms
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Timeless pieces to treasure forever
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2.80 CT Round Cut Moissanite Prong Setting 925 Sterling Silver Diamond Pendant Necklace For Women 2.80 CT Round Cut Moissanite Prong Setting 925 Sterling Silver Diamond Pendant Necklace For Women
2.80 CT Round Cut Moissanite Prong Setting 925 Sterling Silver Diamond Pendant Necklace For Women

From $358.34
From $358.34
Classic 1 CT Solitaire Round Moissanite Engagement Ring in Sterling Silver Classic 1 CT Solitaire Round Moissanite Engagement Ring in Sterling Silver
Classic 1 CT Solitaire Round Moissanite Engagement Ring in Sterling Silver

From $232.42
From $232.42
Radiant Collect Setting and Round Prong Setting Moissanite Sterling Silver Bracelet Radiant Collect Setting and Round Prong Setting Moissanite Sterling Silver Bracelet
Radiant Collect Setting and Round Prong Setting Moissanite Sterling Silver Bracelet

From $1,099.08
From $1,099.08
1.0 CT Round Cut 925 Sterling Silver Solitaire Moissanite Everywear Stud Earrings 1.0 CT Round Cut 925 Sterling Silver Solitaire Moissanite Everydaywear Stud Earrings
1.0 CT Round Cut 925 Sterling Silver Solitaire Moissanite Everydaywear Stud Earrings

From $142.33
From $142.33

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Bande de Mariage

Timeless and meaningful, it is the seal of intense love stories.

Dainty Sterling Silver Half Eternity Wedding Band Set with Brilliant Pavé Stones Dainty Sterling Silver Half Eternity Wedding Band Set with Brilliant Pavé Stones
Dainty Sterling Silver Half Eternity Wedding Band Set with Brilliant Pavé Stones

$178.36
$178.36
Men's Thick Wide Polished Sterling Silver Wedding Band Men's Thick Wide Polished Sterling Silver Wedding Band
Men's Thick Wide Polished Sterling Silver Wedding Band

$448.63
$448.63
Triple-row Round-cut Moissanite Diamond Eternity Sterling Silver Statement Wedding Band Triple-row Round-cut Moissanite Diamond Eternity Sterling Silver Statement Wedding Band
Triple-row Round-cut Moissanite Diamond Eternity Sterling Silver Statement Wedding Band

$484.67
$484.67
The Overlapping Trio Oval Cluster Moissanite Ring in Sterling Silver The Overlapping Trio Oval Cluster Moissanite Ring in Sterling Silver
The Overlapping Trio Oval Cluster Moissanite Ring in Sterling Silver
$304.49
$304.49
Geometric Openwork Sterling Silver Cluster Diamond Statement Band with Asymmetrical Pavé Borders Geometric Openwork Sterling Silver Cluster Diamond Statement Band with Asymmetrical Pavé Borders
Geometric Openwork Sterling Silver Cluster Diamond Statement Band with Asymmetrical Pavé Borders
$286.47
$286.47
Princess-Cut Moissanite Five-Stone Half Eternity Anniversary Band in 925 Sterling Silver Princess-Cut Moissanite Five-Stone Half Eternity Anniversary Band in 925 Sterling Silver
Princess-Cut Moissanite Five-Stone Half Eternity Anniversary Band in 925 Sterling Silver

$286.47
$286.47
Bamboo-Inspired Round Cut Moissanite Stackable Ring in Sterling Silver Bamboo-Inspired Round Cut Moissanite Stackable Ring in Sterling Silver
Bamboo-Inspired Round Cut Moissanite Stackable Ring in Sterling Silver

$250.43
$250.43
Two-row Pavé Classic Round Moissanite Half-eternity Wedding Anniversary Band Two-row Pavé Classic Round Moissanite Half-eternity Wedding Anniversary Band
Two-row Pavé Classic Round Moissanite Half-eternity Wedding Anniversary Band

$376.56
$376.56
Half Eternity Oval Brilliance Moissanite Diamond Ring in Sterling Silver for Women Half Eternity Oval Brilliance Moissanite Diamond Ring in Sterling Silver for Women
Half Eternity Oval Brilliance Moissanite Diamond Ring in Sterling Silver for Women

$358.54
$358.54
925 Sterling Silver Geometric Chain-Link Moissanite Statement Wedding Band for Men 925 Sterling Silver Geometric Chain-Link Moissanite Statement Wedding Band for Men
925 Sterling Silver Geometric Chain-Link Moissanite Statement Wedding Band for Men
$304.49
$304.49

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The Blog Edit

Lifestyle | Jewellery | Materials

Care Guides, Styling Tips, & Material Origins

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Princess Cut Moissanite Engagement Rings anniversary rings

Princess Cut Moissanite Engagement Rings: A Practical Buying Guide

Start with the square silhouette Princess cut moissanite engagement rings bring straight edges and a defined square outline to bridal...

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Moissanite vs. Lab Grown Diamond: Which Is Right for Your Ring?

Moissanite vs. Lab Grown Diamond: Which Is Right for Your Ring?

Moissanite and lab grown diamonds get grouped together often — both are lab-produced, both cost dramatically less than mined diamonds,...

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Emerald Cut Moissanite Engagement Rings anniversary rings

Emerald Cut Moissanite Engagement Rings: What to Look For

A ring shape with room to breathe Emerald cut moissanite engagement rings appeal to people who love clean lines and...

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How Much Does a Moissanite Engagement Ring Cost

How Much Does a Moissanite Engagement Ring Cost? A Budget Guide

Moissanite pricing isn't a single number — it moves based on four factors, in roughly this order of impact: cut...

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Engagement Rings with Lab Grown Diamonds

Engagement Rings with Lab Grown Diamonds: Styles & Settings Guide

Once you've settled on a lab grown diamond for its quality and value, the next decision is style — and...

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Round vs. Oval vs. Marquise

Round vs. Oval vs. Marquise: Choosing Your Moissanite Ring Shape

Shape is one of the most personal decisions in choosing a moissanite engagement ring — it affects perceived size, how...

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