Home 3 Carat Lab Grown Diamond Rings

3 Carat Lab Grown Diamond Rings

Fine jewelry in solid gold and platinum, made to order in our Los Angeles atelier.

The Angelica radiant engagement ring setting in 18K Yellow Gold | RockHer
The Angelica Three Stone Matched Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Three Stone Matched Radiant Cut · 18K Yellow Gold
$7,205.00
The Angelica round engagement ring setting in 18K Yellow Gold | RockHer
The Angelica Three Stone Matched Round Engagement Ring Setting in 18K Yellow Gold
Three Stone Matched Round · 18K Yellow Gold
$7,170.00
The Adelaide oval engagement ring setting in 18K Yellow Gold | RockHer
The Adelaide Pavé Swirl Halo Oval Engagement Ring Setting in 18K Yellow Gold
Pavé Swirl Halo Oval · 18K Yellow Gold
$4,630.00
The Adelaide round engagement ring setting in 18K Yellow Gold | RockHer
The Adelaide Pavé Swirl Halo Round Engagement Ring Setting in 18K Yellow Gold
Pavé Swirl Halo Round · 18K Yellow Gold
$4,560.00
The Annie emerald engagement ring setting in 18K Yellow Gold | RockHer
The Annie Halo Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Halo Emerald Cut · 18K Yellow Gold
$5,990.00
The Annie radiant engagement ring setting in 18K Yellow Gold | RockHer
The Annie Halo Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Halo Radiant Cut · 18K Yellow Gold
$6,065.00
The Annie round engagement ring setting in 18K Yellow Gold | RockHer
The Annie Halo Round Engagement Ring Setting in 18K Yellow Gold
Halo Round · 18K Yellow Gold
$5,955.00
The Bianca cushion engagement ring setting in 18K Yellow Gold | RockHer
The Bianca Classic Prong Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Classic Prong Halo Cushion Cut · 18K Yellow Gold
$3,450.00
The Bianca Classic Prong Halo Round Engagement Ring Setting in 18K Yellow Gold
The Bianca Classic Prong Halo Round Engagement Ring Setting in 18K Yellow Gold
Classic Prong Halo Round · 18K Yellow Gold
$3,450.00
The Cosette Pavé Halo Engagement Ring Setting for Cushion Diamonds in 18K Yellow Gold | RockHer
The Cosette Pavé Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Pavé Halo Cushion Cut · 18K Yellow Gold
$3,450.00
The Cosette round engagement ring setting in 18K Yellow Gold | RockHer
The Cosette Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Pavé Halo Round · 18K Yellow Gold
$2,985.00
The Allegra princess engagement ring setting in 18K Yellow Gold | RockHer
The Allegra Shared Prong Pavé Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Shared Prong Pavé Halo Princess Cut · 18K Yellow Gold
$3,760.00
The Allegra round engagement ring setting in 18K Yellow Gold | RockHer
The Allegra Shared Prong Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Shared Prong Pavé Halo Round · 18K Yellow Gold
$3,690.00
The Arietta cushion engagement ring setting in 18K Yellow Gold | RockHer
The Arietta Double Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Cushion Cut · 18K Yellow Gold
$5,925.00
The Arietta round engagement ring setting in 18K Yellow Gold | RockHer
The Arietta Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$5,880.00
The Eddie cushion engagement ring setting in 18K Yellow Gold | RockHer
The Eddie Modern French Pavé Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Modern French Pavé Halo Cushion Cut · 18K Yellow Gold
$3,950.00
The Eddie round engagement ring setting in 18K Yellow Gold | RockHer
The Eddie Modern French Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Modern French Pavé Halo Round · 18K Yellow Gold
$3,990.00
The Cadence cushion engagement ring setting in 18K Yellow Gold | RockHer
The Cadence Double Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Cushion Cut · 18K Yellow Gold
$4,810.00
The Cadence round engagement ring setting in 18K Yellow Gold | RockHer
The Cadence Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$4,850.00
The Hayley asscher engagement ring setting in 18K Yellow Gold | RockHer
The Hayley Bezel Cathedral Solitaire Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Asscher Cut · 18K Yellow Gold
$2,235.00
The Hayley cushion engagement ring setting in 18K Yellow Gold | RockHer
The Hayley Bezel Cathedral Solitaire Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Cushion Cut · 18K Yellow Gold
$2,235.00
The Hayley emerald engagement ring setting in 18K Yellow Gold | RockHer
The Hayley Bezel Cathedral Solitaire Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Emerald Cut · 18K Yellow Gold
$2,235.00
The Hayley heart engagement ring setting in 18K Yellow Gold | RockHer
The Hayley Bezel Cathedral Solitaire Heart Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Heart · 18K Yellow Gold
$2,235.00
The Hayley marquise engagement ring setting in 18K Yellow Gold | RockHer
The Hayley Bezel Cathedral Solitaire Marquise Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Marquise · 18K Yellow Gold
$2,235.00
The Hayley Bezel Cathedral Solitaire Oval Engagement Ring Setting in 18K Yellow Gold
The Hayley Bezel Cathedral Solitaire Oval Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Oval · 18K Yellow Gold
$2,235.00
The Hayley pear engagement ring setting in 18K Yellow Gold | RockHer
The Hayley Bezel Cathedral Solitaire Pear Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Pear · 18K Yellow Gold
$2,235.00
The Hayley radiant engagement ring setting in 18K Yellow Gold | RockHer
The Hayley Bezel Cathedral Solitaire Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Radiant Cut · 18K Yellow Gold
$2,235.00
The Hayley round engagement ring setting in 18K Yellow Gold | RockHer
The Hayley Bezel Cathedral Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Bezel Cathedral Solitaire Round · 18K Yellow Gold
$2,235.00
The Sonata Pavé Halo Engagement Ring Setting for Cushion Diamonds in 18K Yellow Gold | RockHer
The Sonata Graduated Shank Pavé Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Graduated Shank Pavé Halo Cushion Cut · 18K Yellow Gold
$3,750.00
The Sonata princess engagement ring setting in 18K Yellow Gold | RockHer
The Sonata Graduated Shank Pavé Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Graduated Shank Pavé Halo Princess Cut · 18K Yellow Gold
$3,750.00
The Sonata round engagement ring setting in 18K Yellow Gold | RockHer
The Sonata Graduated Shank Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Graduated Shank Pavé Halo Round · 18K Yellow Gold
$3,750.00
The Alicia emerald engagement ring setting in 18K Yellow Gold | RockHer
The Alicia Shared Prong Halo Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Shared Prong Halo Emerald Cut · 18K Yellow Gold
$4,000.00
The Alicia round engagement ring setting in 18K Yellow Gold | RockHer
The Alicia Shared Prong Halo Round Engagement Ring Setting in 18K Yellow Gold
Shared Prong Halo Round · 18K Yellow Gold
$3,925.00
The Betty cushion engagement ring setting in 18K Yellow Gold | RockHer
The Betty Double Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Cushion Cut · 18K Yellow Gold
$5,760.00
The Betty radiant engagement ring setting in 18K Yellow Gold | RockHer
The Betty Double Halo Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Radiant Cut · 18K Yellow Gold
$5,845.00
The Betty round engagement ring setting in 18K Yellow Gold | RockHer
The Betty Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$5,335.00
The Natalie princess engagement ring setting in 18K Yellow Gold | RockHer
The Natalie Classic Three Stone Princess Cut Engagement Ring Setting in 18K Yellow Gold
Classic Three Stone Princess Cut · 18K Yellow Gold
$5,040.00
The Natalie round engagement ring setting in 18K Yellow Gold | RockHer
The Natalie Classic Three Stone Round Engagement Ring Setting in 18K Yellow Gold
Classic Three Stone Round · 18K Yellow Gold
$4,970.00
The Avery princess engagement ring setting in 18K Yellow Gold | RockHer
The Avery Channel Pavé Three Stone Princess Cut Engagement Ring Setting in 18K Yellow Gold
Channel Pavé Three Stone Princess Cut · 18K Yellow Gold
$5,415.00
The Avery round engagement ring setting in 18K Yellow Gold | RockHer
The Avery Channel Pavé Three Stone Round Engagement Ring Setting in 18K Yellow Gold
Channel Pavé Three Stone Round · 18K Yellow Gold
$5,340.00
The Celesta cushion engagement ring setting in 18K Yellow Gold | RockHer
The Celesta Channel Set Pavé Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Channel Set Pavé Cushion Cut · 18K Yellow Gold
$4,030.00
The Celesta Channel Set Pavé Princess Cut Engagement Ring Setting in 18K Yellow Gold
The Celesta Channel Set Pavé Princess Cut Engagement Ring Setting in 18K Yellow Gold
Channel Set Pavé Princess Cut · 18K Yellow Gold
$4,030.00
The Celesta round engagement ring setting in 18K Yellow Gold | RockHer
The Celesta Channel Set Pavé Round Engagement Ring Setting in 18K Yellow Gold
Channel Set Pavé Round · 18K Yellow Gold
$4,030.00
The Demi cushion engagement ring setting in 18K Yellow Gold | RockHer
The Demi Delicate Split Shank Pavé Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Delicate Split Shank Pavé Cushion Cut · 18K Yellow Gold
$3,080.00
The Demi princess engagement ring setting in 18K Yellow Gold | RockHer
The Demi Delicate Split Shank Pavé Princess Cut Engagement Ring Setting in 18K Yellow Gold
Delicate Split Shank Pavé Princess Cut · 18K Yellow Gold
$3,080.00
The Demi round engagement ring setting in 18K Yellow Gold | RockHer
The Demi Delicate Split Shank Pavé Round Engagement Ring Setting in 18K Yellow Gold
Delicate Split Shank Pavé Round · 18K Yellow Gold
$2,985.00
The Carrie asscher engagement ring setting in 18K Yellow Gold | RockHer
The Carrie Pavé Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Pavé Asscher Cut · 18K Yellow Gold
$2,425.00
The Carrie cushion engagement ring setting in 18K Yellow Gold | RockHer
The Carrie Pavé Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Pavé Cushion Cut · 18K Yellow Gold
$2,315.00
The Carrie emerald engagement ring setting in 18K Yellow Gold | RockHer
The Carrie Pavé Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Pavé Emerald Cut · 18K Yellow Gold
$2,425.00
The Carrie Pavé Oval Engagement Ring Setting in 18K Yellow Gold
The Carrie Pavé Oval Engagement Ring Setting in 18K Yellow Gold
Pavé Oval · 18K Yellow Gold
$2,425.00
The Carrie princess engagement ring setting in 18K Yellow Gold | RockHer
The Carrie Pavé Princess Cut Engagement Ring Setting in 18K Yellow Gold
Pavé Princess Cut · 18K Yellow Gold
$2,425.00
The Carrie radiant engagement ring setting in 18K Yellow Gold | RockHer
The Carrie Pavé Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Pavé Radiant Cut · 18K Yellow Gold
$2,425.00
The Jessie cushion engagement ring setting in 18K Yellow Gold | RockHer
The Jessie Split Shank French Pavé Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Split Shank French Pavé Cushion Cut · 18K Yellow Gold
$4,070.00
The Jessie princess engagement ring setting in 18K Yellow Gold | RockHer
The Jessie Split Shank French Pavé Princess Cut Engagement Ring Setting in 18K Yellow Gold
Split Shank French Pavé Princess Cut · 18K Yellow Gold
$4,070.00
The Jessie round engagement ring setting in 18K Yellow Gold | RockHer
The Jessie Split Shank French Pavé Round Engagement Ring Setting in 18K Yellow Gold
Split Shank French Pavé Round · 18K Yellow Gold
$4,035.00
The Hymn cushion engagement ring setting in 18K Yellow Gold | RockHer
The Hymn French Pavé Halo Frame Cushion Cut Engagement Ring Setting in 18K Yellow Gold
French Pavé Halo Frame Cushion Cut · 18K Yellow Gold
$3,360.00
The Hymn round engagement ring setting in 18K Yellow Gold | RockHer
The Hymn French Pavé Halo Frame Round Engagement Ring Setting in 18K Yellow Gold
French Pavé Halo Frame Round · 18K Yellow Gold
$3,360.00
The Kate Pavé Halo Engagement Ring Setting for Cushion Diamonds in 18K Yellow Gold | RockHer
The Kate Classic French Pavé Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Classic French Pavé Halo Cushion Cut · 18K Yellow Gold
$3,615.00
The Kate Pavé Halo Engagement Ring Setting for Oval Diamonds in 18K Yellow Gold | RockHer
The Kate Classic French Pavé Halo Oval Engagement Ring Setting in 18K Yellow Gold
Classic French Pavé Halo Oval · 18K Yellow Gold
$3,640.00
The Kate princess engagement ring setting in 18K Yellow Gold | RockHer
The Kate Classic French Pavé Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Classic French Pavé Halo Princess Cut · 18K Yellow Gold
$3,615.00
Made Entirely to Order · Every Time✦ Natural Accent Diamonds✦ Solid Gold & Platinum Only✦ 40 Day Returns✦ GIA & IGI Certified✦Made Entirely to Order · Every Time✦ Natural Accent Diamonds✦ Solid Gold & Platinum Only✦ 40 Day Returns✦ GIA & IGI Certified✦
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Fine Jewelry Made to Order in Los Angeles

Every RockHer piece is made to order in our Los Angeles atelier and offered at one fair price. Our gemology team inspects every piece before it ships, and every order carries a 40 day return window and a lifetime warranty.

Good to Know

Fine Jewelry Questions

How is each piece made?
Every piece is made to order in our Los Angeles atelier and inspected by our gemology team before it ships.
How long until my order arrives?
Made to order pieces are crafted in 8 to 12 business days, then shipped fully insured with a signature required at delivery.
What if it isn't right?
You have a 40 day return window on pieces that are not engraved or custom designed, and a lifetime warranty on every piece.
Talk to a Jeweler

Not sure where to begin?

One conversation with a gemologist replaces a hundred open tabs. We will guide you the way we would guide a close friend.

John Anderson · Lead Gemologist · 1‑800‑779‑1726

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Eco-Friendly Grandeur: Discover 3 Carat Lab Grown Diamond Rings

Make a bold and sustainable statement with our collection of 3 carat lab grown diamond rings. These stunning, ethically created diamonds offer the same brilliance and quality as mined stones, combining modern technology with responsible luxury, perfect for the conscious buyer who desires both size and style.

Why Choose 3 Carat Lab Grown Diamond Rings?

A 3 carat lab grown diamond ring delivers impressive size and exceptional sparkle with a significantly lower environmental footprint. Lab grown diamonds are chemically and physically identical to natural diamonds, providing excellent value without compromising beauty.

Popular Styles Featuring Lab Grown Diamonds:

  • Solitaire Rings: Classic and elegant designs highlighting the center stone
  • Halo Settings: Surrounding the diamond with smaller stones for extra brilliance
  • Three-Stone Rings: Symbolizing your journey with complementary side stones
  • Vintage-Inspired Designs: Combining classic detailing with modern ethics
  • Modern Minimalist: Sleek bands emphasizing the diamond’s fire and clarity

Customization Options:
  • Metal Choices: 14k or 18k yellow, white, rose gold, and platinum
  • Settings: Prong, bezel, pave, and tension for style and security
  • Certification: IGI certified diamonds ensuring quality and authenticity

Expert Tip:
Focus on cut quality to maximize brilliance. Pair your lab grown diamond with recycled metals for an entirely sustainable ring.

Our 3 carat lab grown diamond rings collection offers luxury, size, and ethics, perfect for modern lovers seeking conscious elegance.