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 Kate round engagement ring setting in 18K Yellow Gold | RockHer
The Kate Classic French Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Classic French Pavé Halo Round · 18K Yellow Gold
$3,545.00
The Everly cushion engagement ring setting in 18K Yellow Gold | RockHer
The Everly Classic Shared Prong Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Classic Shared Prong Halo Cushion Cut · 18K Yellow Gold
$3,910.00
The Everly round engagement ring setting in 18K Yellow Gold | RockHer
The Everly Classic Shared Prong Halo Round Engagement Ring Setting in 18K Yellow Gold
Classic Shared Prong Halo Round · 18K Yellow Gold
$3,870.00
The Carnie princess engagement ring setting in 18K Yellow Gold | RockHer
The Carnie Classic Prong Diamond Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Classic Prong Diamond Halo Princess Cut · 18K Yellow Gold
$3,540.00
The Carnie round engagement ring setting in 18K Yellow Gold | RockHer
The Carnie Classic Prong Diamond Halo Round Engagement Ring Setting in 18K Yellow Gold
Classic Prong Diamond Halo Round · 18K Yellow Gold
$3,450.00
The Marcia cushion engagement ring setting in 18K Yellow Gold | RockHer
The Marcia Bezel Halo Channel Band Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Bezel Halo Channel Band Cushion Cut · 18K Yellow Gold
$3,840.00
The Marcia oval engagement ring setting in 18K Yellow Gold | RockHer
The Marcia Bezel Halo Channel Band Oval Engagement Ring Setting in 18K Yellow Gold
Bezel Halo Channel Band Oval · 18K Yellow Gold
$3,875.00
The Marcia round engagement ring setting in 18K Yellow Gold | RockHer
The Marcia Bezel Halo Channel Band Round Engagement Ring Setting in 18K Yellow Gold
Bezel Halo Channel Band Round · 18K Yellow Gold
$3,840.00
The Nina cushion engagement ring setting in 18K Yellow Gold | RockHer
The Nina Classic Linear Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Classic Linear Halo Cushion Cut · 18K Yellow Gold
$3,265.00
The Nina round engagement ring setting in 18K Yellow Gold | RockHer
The Nina Classic Linear Halo Round Engagement Ring Setting in 18K Yellow Gold
Classic Linear Halo Round · 18K Yellow Gold
$3,360.00
The Medley cushion engagement ring setting in 18K Yellow Gold | RockHer
The Medley Double Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Cushion Cut · 18K Yellow Gold
$5,300.00
The Medley round engagement ring setting in 18K Yellow Gold | RockHer
The Medley Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$5,315.00
The Melisma cushion engagement ring setting in 18K Yellow Gold | RockHer
The Melisma Open Twisted Triple Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Open Twisted Triple Halo Cushion Cut · 18K Yellow Gold
$5,715.00
The Melisma princess engagement ring setting in 18K Yellow Gold | RockHer
The Melisma Open Twisted Triple Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Open Twisted Triple Halo Princess Cut · 18K Yellow Gold
$5,715.00
The Melisma round engagement ring setting in 18K Yellow Gold | RockHer
The Melisma Open Twisted Triple Halo Round Engagement Ring Setting in 18K Yellow Gold
Open Twisted Triple Halo Round · 18K Yellow Gold
$5,785.00
The Nicki princess engagement ring setting in 18K Yellow Gold | RockHer
The Nicki Split Shank Pavé Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Split Shank Pavé Halo Princess Cut · 18K Yellow Gold
$4,790.00
The Nicki round engagement ring setting in 18K Yellow Gold | RockHer
The Nicki Split Shank Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Split Shank Pavé Halo Round · 18K Yellow Gold
$4,685.00
The Ottava cushion engagement ring setting in 18K Yellow Gold | RockHer
The Ottava Bypass Pavé Twist Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Bypass Pavé Twist Cushion Cut · 18K Yellow Gold
$4,060.00
The Ottava oval engagement ring setting in 18K Yellow Gold | RockHer
The Ottava Bypass Pavé Twist Oval Engagement Ring Setting in 18K Yellow Gold
Bypass Pavé Twist Oval · 18K Yellow Gold
$4,060.00
The Ottava princess engagement ring setting in 18K Yellow Gold | RockHer
The Ottava Bypass Pavé Twist Princess Cut Engagement Ring Setting in 18K Yellow Gold
Bypass Pavé Twist Princess Cut · 18K Yellow Gold
$4,060.00
The Ottava round engagement ring setting in 18K Yellow Gold | RockHer
The Ottava Bypass Pavé Twist Round Engagement Ring Setting in 18K Yellow Gold
Bypass Pavé Twist Round · 18K Yellow Gold
$4,025.00
The June asscher engagement ring setting in 18K Yellow Gold | RockHer
The June Three Stone Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Three Stone Asscher Cut · 18K Yellow Gold
$3,825.00
The June cushion engagement ring setting in 18K Yellow Gold | RockHer
The June Three Stone Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Three Stone Cushion Cut · 18K Yellow Gold
$3,825.00
The June emerald engagement ring setting in 18K Yellow Gold | RockHer
The June Three Stone Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Three Stone Emerald Cut · 18K Yellow Gold
$3,825.00
The June heart engagement ring setting in 18K Yellow Gold | RockHer
The June Three Stone Heart Engagement Ring Setting in 18K Yellow Gold
Three Stone Heart · 18K Yellow Gold
$3,825.00
The June marquise engagement ring setting in 18K Yellow Gold | RockHer
The June Three Stone Marquise Engagement Ring Setting in 18K Yellow Gold
Three Stone Marquise · 18K Yellow Gold
$3,825.00
The Anita princess engagement ring setting in 18K Yellow Gold | RockHer
The Anita Classic Three Stone Princess Cut Engagement Ring Setting in 18K Yellow Gold
Classic Three Stone Princess Cut · 18K Yellow Gold
$3,640.00
The Roberta princess engagement ring setting in 18K Yellow Gold | RockHer
The Roberta Vintage Leaf Pattern Solitaire Princess Cut Engagement Ring Setting in 18K Yellow Gold
Vintage Leaf Pattern Solitaire Princess Cut · 18K Yellow Gold
$2,795.00
The Roberta pear engagement ring setting in 18K Yellow Gold | RockHer
The Roberta Vintage Leaf Pattern Solitaire Pear Engagement Ring Setting in 18K Yellow Gold
Vintage Leaf Pattern Solitaire Pear · 18K Yellow Gold
$2,795.00
The Roberta radiant engagement ring setting in 18K Yellow Gold | RockHer
The Roberta Vintage Leaf Pattern Solitaire Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Vintage Leaf Pattern Solitaire Radiant Cut · 18K Yellow Gold
$2,795.00
The Roberta round engagement ring setting in 18K Yellow Gold | RockHer
The Roberta Vintage Leaf Pattern Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Vintage Leaf Pattern Solitaire Round · 18K Yellow Gold
$2,795.00
The Talea cushion engagement ring setting in 18K Yellow Gold | RockHer
The Talea Hand Engraved Milgrain Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Milgrain Halo Cushion Cut · 18K Yellow Gold
$4,420.00
The Talea princess engagement ring setting in 18K Yellow Gold | RockHer
The Talea Hand Engraved Milgrain Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Milgrain Halo Princess Cut · 18K Yellow Gold
$4,520.00
The Talea round engagement ring setting in 18K Yellow Gold | RockHer
The Talea Hand Engraved Milgrain Halo Round Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Milgrain Halo Round · 18K Yellow Gold
$4,390.00
The Charlotte asscher engagement ring setting in 18K Yellow Gold | RockHer
The Charlotte Cathedral Squared Edge Solitaire Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Cathedral Squared Edge Solitaire Asscher Cut · 18K Yellow Gold
$3,725.00
The Ellie emerald engagement ring setting in 18K Yellow Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Cathedral Comfort Fit Solitaire Emerald Cut · 18K Yellow Gold
$2,515.00
The Ellie heart engagement ring setting in 18K Yellow Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Heart Engagement Ring Setting in 18K Yellow Gold
Cathedral Comfort Fit Solitaire Heart · 18K Yellow Gold
$2,515.00
The Ellie oval engagement ring setting in 18K Yellow Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Oval Engagement Ring Setting in 18K Yellow Gold
Cathedral Comfort Fit Solitaire Oval · 18K Yellow Gold
$2,515.00
The Ellie princess engagement ring setting in 18K Yellow Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Princess Cut Engagement Ring Setting in 18K Yellow Gold
Cathedral Comfort Fit Solitaire Princess Cut · 18K Yellow Gold
$2,515.00
The Ellie pear engagement ring setting in 18K Yellow Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Pear Engagement Ring Setting in 18K Yellow Gold
Cathedral Comfort Fit Solitaire Pear · 18K Yellow Gold
$2,515.00
The Ellie radiant engagement ring setting in 18K Yellow Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Cathedral Comfort Fit Solitaire Radiant Cut · 18K Yellow Gold
$2,515.00
The Ellie round engagement ring setting in 18K Yellow Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Cathedral Comfort Fit Solitaire Round · 18K Yellow Gold
$2,425.00
The Elena asscher engagement ring setting in 18K Yellow Gold | RockHer
The Elena Timeless Graduated Beveled Shank Solitaire Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Timeless Graduated Beveled Shank Solitaire Asscher Cut · 18K Yellow Gold
$2,705.00
The Elena cushion engagement ring setting in 18K Yellow Gold | RockHer
The Elena Timeless Graduated Beveled Shank Solitaire Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Timeless Graduated Beveled Shank Solitaire Cushion Cut · 18K Yellow Gold
$2,705.00
The Juliette pear engagement ring setting in 18K Yellow Gold | RockHer
The Juliette Elegant Cathedral Squared Edge Solitaire Pear Engagement Ring Setting in 18K Yellow Gold
Elegant Cathedral Squared Edge Solitaire Pear · 18K Yellow Gold
$3,545.00
The Juliette radiant engagement ring setting in 18K Yellow Gold | RockHer
The Juliette Elegant Cathedral Squared Edge Solitaire Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Elegant Cathedral Squared Edge Solitaire Radiant Cut · 18K Yellow Gold
$3,545.00
The Juliette round engagement ring setting in 18K Yellow Gold | RockHer
The Juliette Elegant Cathedral Squared Edge Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Elegant Cathedral Squared Edge Solitaire Round · 18K Yellow Gold
$3,545.00
The Lolette asscher engagement ring setting in 18K Yellow Gold | RockHer
The Lolette Classic Low Base Solitaire Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Classic Low Base Solitaire Asscher Cut · 18K Yellow Gold
$1,805.00
The Lolette cushion engagement ring setting in 18K Yellow Gold | RockHer
The Lolette Classic Low Base Solitaire Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Classic Low Base Solitaire Cushion Cut · 18K Yellow Gold
$1,805.00
The Lolette emerald engagement ring setting in 18K Yellow Gold | RockHer
The Lolette Classic Low Base Solitaire Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Classic Low Base Solitaire Emerald Cut · 18K Yellow Gold
$1,805.00
The Lolette heart engagement ring setting in 18K Yellow Gold | RockHer
The Lolette Classic Low Base Solitaire Heart Engagement Ring Setting in 18K Yellow Gold
Classic Low Base Solitaire Heart · 18K Yellow Gold
$1,805.00
The Lolette marquise engagement ring setting in 18K Yellow Gold | RockHer
The Lolette Classic Low Base Solitaire Marquise Engagement Ring Setting in 18K Yellow Gold
Classic Low Base Solitaire Marquise · 18K Yellow Gold
$1,805.00
The Lolette oval engagement ring setting in 18K Yellow Gold | RockHer
The Lolette Classic Low Base Solitaire Oval Engagement Ring Setting in 18K Yellow Gold
Classic Low Base Solitaire Oval · 18K Yellow Gold
$1,805.00
The Rio asscher engagement ring setting in 18K Yellow Gold | RockHer
The Rio Scroll Gallery Comfort Fit Solitaire Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Scroll Gallery Comfort Fit Solitaire Asscher Cut · 18K Yellow Gold
$2,235.00
The Rio cushion engagement ring setting in 18K Yellow Gold | RockHer
The Rio Scroll Gallery Comfort Fit Solitaire Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Scroll Gallery Comfort Fit Solitaire Cushion Cut · 18K Yellow Gold
$2,235.00
The Donna oval engagement ring setting in 14K Rose Gold | RockHer
The Donna Cathedral French Pavé Solitaire Oval Engagement Ring Setting in 14K Rose Gold
Cathedral French Pavé Solitaire Oval · 14K Rose Gold
$2,425.00
The Donna princess engagement ring setting in 14K Rose Gold | RockHer
The Donna Cathedral French Pavé Solitaire Princess Cut Engagement Ring Setting in 14K Rose Gold
Cathedral French Pavé Solitaire Princess Cut · 14K Rose Gold
$2,515.00
The Donna pear engagement ring setting in 14K Rose Gold | RockHer
The Donna Cathedral French Pavé Solitaire Pear Engagement Ring Setting in 14K Rose Gold
Cathedral French Pavé Solitaire Pear · 14K Rose Gold
$2,425.00
The Donna round engagement ring setting in 14K Rose Gold | RockHer
The Donna Cathedral French Pavé Solitaire Round Engagement Ring Setting in 14K Rose Gold
Cathedral French Pavé Solitaire Round · 14K Rose Gold
$2,425.00
The Stevie princess engagement ring setting in 14K Rose Gold | RockHer
The Stevie Contemporary Channel Princess Cut Engagement Ring Setting in 14K Rose Gold
Contemporary Channel Princess Cut · 14K Rose Gold
$2,145.00
Made Entirely to Order · Every Time Natural Accent Diamonds Solid Gold & Platinum Only 40 Day Returns GIA & IGI CertifiedMade 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

Book a Consultation

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.