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 Joan princess engagement ring setting in 18K Yellow Gold | RockHer
The Joan Crossover Pavé Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Crossover Pavé Halo Princess Cut · 18K Yellow Gold
$4,230.00
The Joan round engagement ring setting in 18K Yellow Gold | RockHer
The Joan Crossover Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Crossover Pavé Halo Round · 18K Yellow Gold
$4,195.00
The Toni cushion engagement ring setting in 18K Yellow Gold | RockHer
The Toni Double Row Split Shank Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Double Row Split Shank Halo Cushion Cut · 18K Yellow Gold
$4,080.00
The Toni princess engagement ring setting in 18K Yellow Gold | RockHer
The Toni Double Row Split Shank Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Double Row Split Shank Halo Princess Cut · 18K Yellow Gold
$4,080.00
The Toni round engagement ring setting in 18K Yellow Gold | RockHer
The Toni Double Row Split Shank Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Row Split Shank Halo Round · 18K Yellow Gold
$4,045.00
The Billie cushion engagement ring setting in 18K Yellow Gold | RockHer
The Billie Prong Halo Split Shank Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Prong Halo Split Shank Cushion Cut · 18K Yellow Gold
$4,275.00
The Billie princess engagement ring setting in 18K Yellow Gold | RockHer
The Billie Prong Halo Split Shank Princess Cut Engagement Ring Setting in 18K Yellow Gold
Prong Halo Split Shank Princess Cut · 18K Yellow Gold
$4,380.00
The Billie round engagement ring setting in 18K Yellow Gold | RockHer
The Billie Prong Halo Split Shank Round Engagement Ring Setting in 18K Yellow Gold
Prong Halo Split Shank Round · 18K Yellow Gold
$4,335.00
The Vega cushion engagement ring setting in 18K Yellow Gold | RockHer
The Vega Scroll Gallery Split Shank Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Scroll Gallery Split Shank Halo Cushion Cut · 18K Yellow Gold
$3,450.00
The Vega princess engagement ring setting in 18K Yellow Gold | RockHer
The Vega Scroll Gallery Split Shank Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Scroll Gallery Split Shank Halo Princess Cut · 18K Yellow Gold
$3,450.00
The Vega round engagement ring setting in 18K Yellow Gold | RockHer
The Vega Scroll Gallery Split Shank Halo Round Engagement Ring Setting in 18K Yellow Gold
Scroll Gallery Split Shank Halo Round · 18K Yellow Gold
$3,545.00
The Maria cushion engagement ring setting in 18K Yellow Gold | RockHer
The Maria Linear Double Row Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Linear Double Row Halo Cushion Cut · 18K Yellow Gold
$4,960.00
The Maria princess engagement ring setting in 18K Yellow Gold | RockHer
The Maria Linear Double Row Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Linear Double Row Halo Princess Cut · 18K Yellow Gold
$4,960.00
The Maria round engagement ring setting in 18K Yellow Gold | RockHer
The Maria Linear Double Row Halo Round Engagement Ring Setting in 18K Yellow Gold
Linear Double Row Halo Round · 18K Yellow Gold
$4,920.00
The Whitney Double Halo Asscher Cut Engagement Ring Setting in 18K Yellow Gold
The Whitney Double Halo Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Asscher Cut · 18K Yellow Gold
$4,590.00
The Whitney Pavé Halo Engagement Ring Setting for Cushion Diamonds in 18K Yellow Gold | RockHer
The Whitney Double Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Cushion Cut · 18K Yellow Gold
$4,550.00
The Whitney emerald engagement ring setting in 18K Yellow Gold | RockHer
The Whitney Double Halo Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Emerald Cut · 18K Yellow Gold
$4,635.00
The Whitney heart engagement ring setting in 18K Yellow Gold | RockHer
The Whitney Double Halo Heart Engagement Ring Setting in 18K Yellow Gold
Double Halo Heart · 18K Yellow Gold
$4,635.00
The Whitney marquise engagement ring setting in 18K Yellow Gold | RockHer
The Whitney Double Halo Marquise Engagement Ring Setting in 18K Yellow Gold
Double Halo Marquise · 18K Yellow Gold
$4,645.00
The Whitney Pavé Halo Engagement Ring Setting for Oval Diamonds in 18K Yellow Gold | RockHer
The Whitney Double Halo Oval Engagement Ring Setting in 18K Yellow Gold
Double Halo Oval · 18K Yellow Gold
$4,635.00
The Whitney Double Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
The Whitney Double Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Princess Cut · 18K Yellow Gold
$4,590.00
The Whitney pear engagement ring setting in 18K Yellow Gold | RockHer
The Whitney Double Halo Pear Engagement Ring Setting in 18K Yellow Gold
Double Halo Pear · 18K Yellow Gold
$4,725.00
The Whitney radiant engagement ring setting in 18K Yellow Gold | RockHer
The Whitney Double Halo Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Radiant Cut · 18K Yellow Gold
$4,635.00
The Whitney round engagement ring setting in 18K Yellow Gold | RockHer
The Whitney Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$4,510.00
The Dinah asscher engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Asscher Cut · 18K Yellow Gold
$7,670.00
The Dinah cushion engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Cushion Cut · 18K Yellow Gold
$7,560.00
The Dinah emerald engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Emerald Cut · 18K Yellow Gold
$7,560.00
The Dinah heart engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Heart Engagement Ring Setting in 18K Yellow Gold
Double Halo Heart · 18K Yellow Gold
$7,560.00
The Dinah marquise engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Marquise Engagement Ring Setting in 18K Yellow Gold
Double Halo Marquise · 18K Yellow Gold
$7,670.00
The Dinah oval engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Oval Engagement Ring Setting in 18K Yellow Gold
Double Halo Oval · 18K Yellow Gold
$7,560.00
The Dinah princess engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Princess Cut · 18K Yellow Gold
$7,450.00
The Dinah Double Halo Pear Engagement Ring Setting in 18K Yellow Gold
The Dinah Double Halo Pear Engagement Ring Setting in 18K Yellow Gold
Double Halo Pear · 18K Yellow Gold
$7,610.00
The Dinah radiant engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Radiant Cut · 18K Yellow Gold
$7,560.00
The Dinah round engagement ring setting in 18K Yellow Gold | RockHer
The Dinah Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$7,630.00
The Macy cushion engagement ring setting in 18K Yellow Gold | RockHer
The Macy Double Halo Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Cushion Cut · 18K Yellow Gold
$6,100.00
The Macy princess engagement ring setting in 18K Yellow Gold | RockHer
The Macy Double Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Double Halo Princess Cut · 18K Yellow Gold
$6,080.00
The Macy round engagement ring setting in 18K Yellow Gold | RockHer
The Macy Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$6,230.00
The Cecilia round engagement ring setting in 18K Yellow Gold | RockHer
The Cecilia Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$6,235.00
The Bell princess engagement ring setting in 18K Yellow Gold | RockHer
The Bell Bold Twist Pavé Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Bold Twist Pavé Halo Princess Cut · 18K Yellow Gold
$4,215.00
The Bell round engagement ring setting in 18K Yellow Gold | RockHer
The Bell Bold Twist Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Bold Twist Pavé Halo Round · 18K Yellow Gold
$4,180.00
The Clementine princess engagement ring setting in 18K Yellow Gold | RockHer
The Clementine Twisted Square Pavé Halo Princess Cut Engagement Ring Setting in 18K Yellow Gold
Twisted Square Pavé Halo Princess Cut · 18K Yellow Gold
$4,720.00
The Clementine round engagement ring setting in 18K Yellow Gold | RockHer
The Clementine Twisted Square Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Twisted Square Pavé Halo Round · 18K Yellow Gold
$4,685.00
The Priscilla asscher engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Asscher Cut · 18K Yellow Gold
$2,425.00
The Priscilla cushion engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Cushion Cut · 18K Yellow Gold
$2,425.00
The Priscilla emerald engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Emerald Cut · 18K Yellow Gold
$2,425.00
The Priscilla heart engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Heart Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Heart · 18K Yellow Gold
$2,425.00
The Priscilla marquise engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Marquise Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Marquise · 18K Yellow Gold
$2,425.00
The Priscilla oval engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Oval Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Oval · 18K Yellow Gold
$2,425.00
The Priscilla princess engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Princess Cut Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Princess Cut · 18K Yellow Gold
$2,425.00
The Priscilla pear engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Pear Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Pear · 18K Yellow Gold
$2,425.00
The Priscilla radiant engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Radiant Cut · 18K Yellow Gold
$2,425.00
The Priscilla round engagement ring setting in 18K Yellow Gold | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Delicate Twist Cathedral Solitaire Round · 18K Yellow Gold
$2,425.00
The Veronica Hand Engraved Scroll Vintage Solitaire Asscher Cut Engagement Ring Setting in 18K Yellow Gold
The Veronica Hand Engraved Scroll Vintage Solitaire Asscher Cut Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Scroll Vintage Solitaire Asscher Cut · 18K Yellow Gold
$2,890.00
The Veronica cushion engagement ring setting in 18K Yellow Gold | RockHer
The Veronica Hand Engraved Scroll Vintage Solitaire Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Scroll Vintage Solitaire Cushion Cut · 18K Yellow Gold
$2,890.00
The Veronica emerald engagement ring setting in 18K Yellow Gold | RockHer
The Veronica Hand Engraved Scroll Vintage Solitaire Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Scroll Vintage Solitaire Emerald Cut · 18K Yellow Gold
$2,890.00
The Veronica heart engagement ring setting in 18K Yellow Gold | RockHer
The Veronica Hand Engraved Scroll Vintage Solitaire Heart Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Scroll Vintage Solitaire Heart · 18K Yellow Gold
$2,890.00
The Veronica marquise engagement ring setting in 18K Yellow Gold | RockHer
The Veronica Hand Engraved Scroll Vintage Solitaire Marquise Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Scroll Vintage Solitaire Marquise · 18K Yellow Gold
$2,890.00
The Veronica Solitaire Engagement Ring Setting for Oval Diamonds in 18K Yellow Gold | RockHer
The Veronica Hand Engraved Scroll Vintage Solitaire Oval Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Scroll Vintage Solitaire Oval · 18K Yellow Gold
$2,890.00
The Veronica princess engagement ring setting in 18K Yellow Gold | RockHer
The Veronica Hand Engraved Scroll Vintage Solitaire Princess Cut Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Scroll Vintage Solitaire Princess Cut · 18K Yellow Gold
$2,890.00
The Veronica pear engagement ring setting in 18K Yellow Gold | RockHer
The Veronica Hand Engraved Scroll Vintage Solitaire Pear Engagement Ring Setting in 18K Yellow Gold
Hand Engraved Scroll Vintage Solitaire Pear · 18K Yellow Gold
$2,890.00
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.