3 Carat Lab-Grown Diamond Engagement Rings

Dreaming of a ring that dazzles? Our 3 carat diamond engagement rings offer an impressive display of brilliance and luxury. This size is perfect for those who desire a bold statement piece that captures attention and admiration. Each ring in our collection is carefully crafted to highlight the beauty of lab-grown diamonds, making them an ethical and stunning choice. 

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June Round Classic Solitaire Diamond Ring in yellow gold with a 2 carat lab grown round diamond, featuring a secure four-prong setting. 2 Carat June Round Classic Solitaire Diamond Ring worn on hand, showcasing its elegant yellow gold band and timeless round diamond cut.

June Round Classic Solitaire Lab Grown Diamond Ring

$8,087.00 $10,782.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.0 1.5 2.0 2.5 3.0 4.0
Save 15%
Mira Oval Half-Bezel Solitaire Diamond Ring in yellow gold with a 2 carat east-west set lab-grown oval diamond, showcasing a sleek modern bezel. 2 carat Mira Oval Half-Bezel Solitaire Diamond Ring worn on hand, featuring an east-west oval diamond in yellow gold for a minimalist engagement look.

Mira Oval Half Bezel Solitaire Lab Grown Diamond Ring

$9,586.00 $11,278.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 3.0 4.0
Save 33%
Cora Pear Cathedral Pavé Solitaire Diamond Ring | 2 Carat in yellow gold with a pear-cut lab grown diamond and pavé band, perfect for engagement. Model wearing the Cora Pear Cathedral Pavé Solitaire Diamond Ring | 2 Carat, showcasing its elegant pear-cut diamond and pavé setting on hand.

Cora Pear Cathedral Pavé Solitaire Lab Grown Diamond Ring

$10,431.00 $15,569.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 2.5 3.5 4.5
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Cora Emerald Cathedral Pavé Solitaire Diamond Ring in yellow gold with a 2 carat emerald-cut lab grown diamond and pavé band setting. 2 carat Cora Emerald Cathedral Pavé Solitaire Diamond Ring worn on hand, showcasing the elegant yellow gold band and emerald-cut center stone.

Cora Emerald Cathedral Pavé Solitaire Lab Grown Diamond Ring

$12,491.00 $15,569.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 2.5 3.5 4.5
Save 33%
Cora Cushion Cathedral Pavé Solitaire Diamond Ring in yellow gold with 2 carat lab-grown cushion-cut diamond and pavé band, perfect for engagements. 2 carat Cora Cushion Cathedral Pavé Solitaire Diamond Ring on hand, showcasing elegant yellow gold setting and sparkling cushion-cut center stone.

Cora Cushion Cathedral Pavé Solitaire Lab Grown Diamond Ring

$12,324.00 $18,394.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 2.5 3.5 4.5
Save 33%
Cora Radiant Cathedral Pavé Solitaire Diamond Ring in yellow gold with a 2 carat radiant-cut lab grown diamond and pavé band setting. Model wearing the Cora Radiant Cathedral Pavé Solitaire Diamond Ring showcasing the 2 carat radiant-cut diamond and elegant pavé band.

Cora Radiant Cathedral Pavé Solitaire Lab Grown Diamond Ring

$12,377.00 $18,472.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 2.5 3.5 4.5
Save 33%
Cora Marquise Cathedral Pavé Solitaire Diamond Ring in yellow gold with 2 carat lab-grown marquise diamond and pavé band, perfect for engagements. 2 carat Cora Marquise Cathedral Pavé Solitaire Diamond Ring worn on hand, showcasing elegant marquise cut and pavé band in yellow gold setting.

Cora Marquise Cathedral Pavé Solitaire Lab Grown Diamond Ring

$12,606.00 $18,881.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 2.5 3.5 4.5
Save 33%
Cora Oval Cathedral Pavé Solitaire Diamond Ring in yellow gold with 2 carat lab grown oval diamond and pavé band, perfect for engagement. Model wearing Cora Oval Cathedral Pavé Solitaire Diamond Ring showcasing 2 carat oval cut diamond set in yellow gold with pavé detailing.

Cora Oval Cathedral Pavé Solitaire Lab Grown Diamond Ring

$12,366.00 $18,456.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 2.5 3.5 4.5
Save 33%
Cora Round Cathedral Pavé Solitaire Diamond Ring in yellow gold with 2 carat lab-grown round diamond and pavé band, ideal for engagement. Model wearing the Cora Round Cathedral Pavé Solitaire Diamond Ring, showcasing its 2 carat round diamond and elegant pavé setting on finger.

Cora Round Cathedral Pavé Solitaire Lab Grown Diamond Ring

$12,319.00 $18,387.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 2.5 3.5 4.5
Save 30%
Bianca Elongated Cushion Ribbed Band Solitaire Diamond Ring in yellow gold with a 2 carat lab grown diamond and detailed ribbed band design. Side view of Bianca Solitaire Diamond Ring in yellow gold showcasing the elongated cushion cut diamond and ribbed band profile.

Bianca Elongated Cushion Ribbed Band Solitaire Lab Grown Diamond Ring

$7,668.00 $10,953.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.0 1.5 2.0 2.5 3.0 4.0
Save 30%
Bianca Round Ribbed Band Solitaire Lab Grown Diamond Ring Bianca Round Ribbed Band Solitaire Lab Grown Diamond Ring

Bianca Round Ribbed Band Solitaire Lab Grown Diamond Ring

$7,668.00 $10,953.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.0 1.5 2.0 2.5 3.0 4.0
Save 30%
Bianca Cushion Ribbed Band Solitaire Diamond Ring in yellow gold with a 2 carat lab-grown cushion cut diamond and silk-inspired ribbed band. Side view of Bianca Cushion Ribbed Band Solitaire Diamond Ring in yellow gold showcasing elevated cushion cut diamond and textured ribbed band.

Bianca Cushion Ribbed Band Solitaire Lab Grown Diamond Ring

$7,548.00 $10,782.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.0 1.5 2.0 2.5 3.0 4.0
Save 30%
Bianca Marquise Ribbed Band Solitaire Lab Grown Diamond Ring Bianca Marquise Ribbed Band Solitaire Lab Grown Diamond Ring

Bianca Marquise Ribbed Band Solitaire Lab Grown Diamond Ring

$8,051.00 $11,501.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.0 1.5 2.0 2.5 3.0 4.0
Save 30%
Bianca Oval Ribbed Band Solitaire Diamond Ring in yellow gold with a 2 carat lab-grown oval diamond and detailed ribbed band design. Side view of Bianca Oval Ribbed Band Solitaire Diamond Ring in yellow gold showcasing the elevated 2 carat oval diamond and ribbed band texture.

Bianca Oval Ribbed Band Solitaire Lab Grown Diamond Ring

$7,668.00 $10,953.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.0 1.5 2.0 2.5 3.0 4.0
Save 30%
Vesper Emerald Baguette Channel-Set Lab Grown Diamond Ring Vesper Emerald Baguette Channel-Set Lab Grown Diamond Ring

Vesper Emerald Baguette Channel-Set Lab Grown Diamond Ring

$13,763.00 $19,661.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
2.0 2.5 3.5
Save 15%
Remi Pear Bezel Solitaire Diamond Ring in yellow gold with a 2 carat tilted pear-shaped lab-grown diamond, bezel-set for a modern engagement look. Side view of Remi Pear Bezel Solitaire Diamond Ring in yellow gold, showcasing the elevated 2 carat pear-shaped diamond in a sleek bezel setting.

Remi Tilted Pear Bezel Solitaire Lab Grown Diamond Ring

$11,249.00 $13,234.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 3.0 4.0
Save 15%
Remi Oval Bezel Solitaire Lab Grown Diamond Ring Remi Oval Bezel Solitaire Lab Grown Diamond Ring

Remi Oval Bezel Solitaire Lab Grown Diamond Ring

$10,193.00 $11,992.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.5 2.0 3.0 4.0
Save 30%
Terra Cushion Heavy Bezel Lab Grown Diamond Ring Terra Cushion Heavy Bezel Lab Grown Diamond Ring

Terra Cushion Heavy Bezel Lab Grown Diamond Ring

$12,724.00 $18,177.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
2.0 2.5 3.0 4.0
Save 15%
Esme Marquise Split Shank Diamond Ring in yellow gold with 2 carat lab-grown marquise diamond and elegant split shank design. 2 carat Esme Marquise Split Shank Diamond Ring worn on hand, showcasing its yellow gold setting and elongated marquise diamond cut.

Esme Marquise Split Shank Lab Grown Diamond Ring

$8,928.00 $10,503.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.0 1.5 2.0 2.5 3.0 4.0
Save 25%
Esme Elongated Cushion Split Shank Lab Grown Diamond Ring Esme Elongated Cushion Split Shank Lab Grown Diamond Ring

Esme Elongated Cushion Split Shank Lab Grown Diamond Ring

$9,159.00 $12,211.00
Metal
10K 10K 14K 14K 18K 18K PT
Total Carat
1.0 1.5 2.0 2.5 3.0 4.0

3-Carat Lab-Grown Diamond Engagement Rings

For couples who believe their love story deserves to be told in bold strokes, our 3-carat lab-grown diamond engagement rings offer breathtaking presence without the breathtaking price tag of mined diamonds. These extraordinary stones represent the sweet spot where luxury becomes accessible - where you can own a diamond that would typically require generational wealth, all while making an environmentally conscious choice. The numbers speak for themselves: while a quality 3-carat natural diamond might command $25,000 or more, our lab-grown equivalents deliver identical brilliance and quality for just $2000+. This dramatic price difference isn't about compromising on quality (every diamond is IGI-certified with Excellent or Ideal cut grades), but rather about eliminating the artificial scarcity and environmental costs of mining.

The result? A diamond that lets you celebrate your commitment without financial regret, a center piece that will draw admiring glances for generations while representing your shared values of intelligence and responsibility.

Are lab-grown diamonds real diamonds?

Yes! Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds. They're graded using the same 4Cs (cut, color, clarity, and carat weight) by reputable labs like IGI. The only difference is their origin - created sustainably in a lab rather than mined from the earth.

Is a 3-carat diamond too big for everyday wear?

While a 3-carat diamond makes a definite statement, many clients wear them daily without issue. We recommend choosing a secure setting (like a bezel or cathedral design) and considering your lifestyle.

What clarity grade should I choose for a 3-carat diamond?

For stones this size, we recommend VS2 clarity or higher to ensure eye-clean perfection. The larger surface area makes inclusions slightly more visible than in smaller carat weights.