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 June asscher engagement ring setting in Platinum | RockHer
The June Three Stone Asscher Cut Engagement Ring Setting in Platinum
Three Stone Asscher Cut · Platinum
$4,105.00
The Andrea Three Stone Halo Round Engagement Ring Setting in Platinum
The Andrea Three Stone Halo Round Engagement Ring Setting in Platinum
Three Stone Halo Round · Platinum
$5,225.00
The Viola radiant engagement ring setting in Platinum | RockHer
The Viola Contemporary Comfort Fit Flat Shank Solitaire Radiant Cut Engagement Ring Setting in Platinum
Contemporary Comfort Fit Flat Shank Solitaire Radiant Cut · Platinum
$2,425.00
The Anna Three Stone Halo Round Engagement Ring Setting in Platinum
The Anna Three Stone Halo Round Engagement Ring Setting in Platinum
Three Stone Halo Round · Platinum
$4,925.00
The Floria Comfort Fit Claw Prong Solitaire Oval Engagement Ring Setting in Platinum
The Floria Comfort Fit Claw Prong Solitaire Oval Engagement Ring Setting in Platinum
Comfort Fit Claw Prong Solitaire Oval · Platinum
$2,140.00
The Bess round engagement ring setting in Platinum | RockHer
The Bess Love Knot Pavé Halo Round Engagement Ring Setting in Platinum
Love Knot Pavé Halo Round · Platinum
$6,230.00
The Gilda emerald engagement ring setting in Platinum | RockHer
The Gilda Five Prong Comfort Fit Claw Solitaire Emerald Cut Engagement Ring Setting in Platinum
Five Prong Comfort Fit Claw Solitaire Emerald Cut · Platinum
$2,425.00
The Calista round engagement ring setting in Platinum | RockHer
The Calista Love Knot Halo Round Engagement Ring Setting in Platinum
Love Knot Halo Round · Platinum
$5,565.00
The Gilda oval engagement ring setting in Platinum | RockHer
The Gilda Five Prong Comfort Fit Claw Solitaire Oval Engagement Ring Setting in Platinum
Five Prong Comfort Fit Claw Solitaire Oval · Platinum
$2,425.00
The Cappella Linear Bezel Pavé Round Engagement Ring Setting in Platinum
The Cappella Linear Bezel Pavé Round Engagement Ring Setting in Platinum
Linear Bezel Pavé Round · Platinum
$3,080.00
The Gilda radiant engagement ring setting in Platinum | RockHer
The Gilda Five Prong Comfort Fit Claw Solitaire Radiant Cut Engagement Ring Setting in Platinum
Five Prong Comfort Fit Claw Solitaire Radiant Cut · Platinum
$2,425.00
The Dionne round engagement ring setting in Platinum | RockHer
The Dionne Diamond Pavé Halo Round Engagement Ring Setting in Platinum
Diamond Pavé Halo Round · Platinum
$2,795.00
The Isolde oval engagement ring setting in Platinum | RockHer
The Isolde Petite Knife Edge Solitaire Oval Engagement Ring Setting in Platinum
Petite Knife Edge Solitaire Oval · Platinum
$2,140.00
The Nera Floral Split Shank Halo Round Engagement Ring Setting in Platinum
The Nera Floral Split Shank Halo Round Engagement Ring Setting in Platinum
Floral Split Shank Halo Round · Platinum
$4,325.00
The Lolette Classic Low Base Solitaire Cushion Cut Engagement Ring Setting in Platinum
The Lolette Classic Low Base Solitaire Cushion Cut Engagement Ring Setting in Platinum
Classic Low Base Solitaire Cushion Cut · Platinum
$2,240.00
The Nedda round engagement ring setting in Platinum | RockHer
The Nedda Double Halo Round Engagement Ring Setting in Platinum
Double Halo Round · Platinum
$5,030.00
The Carole marquise engagement ring setting in Platinum | RockHer
The Carole Two Row Pavé Split Shank Marquise Engagement Ring Setting in Platinum
Two Row Pavé Split Shank Marquise · Platinum
$4,390.00
The Ariana round engagement ring setting in Platinum | RockHer
The Ariana Swirl Halo Round Engagement Ring Setting in Platinum
Swirl Halo Round · Platinum
$4,375.00
The Caroline round engagement ring setting in Platinum | RockHer
The Caroline Three Stone Round Engagement Ring Setting in Platinum
Three Stone Round · Platinum
$3,920.00
The Elsa Timeless Comfort Fit Rounded Solitaire Round Engagement Ring Setting in Platinum
The Elsa Timeless Comfort Fit Rounded Solitaire Round Engagement Ring Setting in Platinum
Timeless Comfort Fit Rounded Solitaire Round · Platinum
$2,330.00
The Elliott Hidden Halo Pavé Round Engagement Ring Setting in Platinum
The Elliott Hidden Halo Pavé Round Engagement Ring Setting in Platinum
Hidden Halo Pavé Round · Platinum
$3,170.00
The Leonora round engagement ring setting in Platinum | RockHer
The Leonora Simple Low Base Knife Edge Solitaire Round Engagement Ring Setting in Platinum
Simple Low Base Knife Edge Solitaire Round · Platinum
$2,330.00
The Eloise round engagement ring setting in Platinum | RockHer
The Eloise Floral Halo Round Engagement Ring Setting in Platinum
Floral Halo Round · Platinum
$4,070.00
The Lana oval engagement ring setting in Platinum | RockHer
The Lana Secret Halo Adorned Prong Solitaire Oval Engagement Ring Setting in Platinum
Secret Halo Adorned Prong Solitaire Oval · Platinum
$3,450.00
The Pamina round engagement ring setting in Platinum | RockHer
The Pamina Cluster Halo Round Engagement Ring Setting in Platinum
Cluster Halo Round · Platinum
$7,220.00
The Lana Secret Halo Adorned Prong Solitaire Round Engagement Ring Setting in Platinum
The Lana Secret Halo Adorned Prong Solitaire Round Engagement Ring Setting in Platinum
Secret Halo Adorned Prong Solitaire Round · Platinum
$3,360.00
The Rosina Engagement Ring Setting for Round Diamonds in Platinum | RockHer
The Rosina Open Intertwined Pavé Row Round Engagement Ring Setting in Platinum
Open Intertwined Pavé Row Round · Platinum
$7,110.00
The Duran emerald engagement ring setting in 18K White Gold | RockHer
The Duran Simple Bezel Solitaire Emerald Cut Engagement Ring Setting in Platinum
Simple Bezel Solitaire Emerald Cut · Platinum
$2,515.00
The Lily emerald engagement ring setting in Platinum | RockHer
The Lily Double Prong Three Stone Emerald Cut Engagement Ring Setting in Platinum
Double Prong Three Stone Emerald Cut · Platinum
$4,530.00
The Lily round engagement ring setting in Platinum | RockHer
The Lily Double Prong Three Stone Round Engagement Ring Setting in Platinum
Double Prong Three Stone Round · Platinum
$4,495.00
The Rio princess engagement ring setting in Platinum | RockHer
The Rio Scroll Gallery Comfort Fit Solitaire Princess Cut Engagement Ring Setting in Platinum
Scroll Gallery Comfort Fit Solitaire Princess Cut · Platinum
$2,705.00
The Rosanna asscher engagement ring setting in Platinum | RockHer
The Rosanna Cathedral Surprise Stone Solitaire Asscher Cut Engagement Ring Setting in Platinum
Cathedral Surprise Stone Solitaire Asscher Cut · Platinum
$3,545.00
The Elsa round engagement ring setting in 14K Rose Gold | RockHer
The Elsa Timeless Comfort Fit Rounded Solitaire Round Engagement Ring Setting in 14K Rose Gold
Timeless Comfort Fit Rounded Solitaire Round · 14K Rose Gold
$1,675.00
The Spring round engagement ring setting in Platinum | RockHer
The Spring East West Eight Claw Comfort Fit Solitaire Round Engagement Ring Setting in Platinum
East West Eight Claw Comfort Fit Solitaire Round · Platinum
$2,795.00
The Charlie Twisted Rope Surprise Stone Solitaire Round Engagement Ring Setting in Platinum
The Charlie Twisted Rope Surprise Stone Solitaire Round Engagement Ring Setting in Platinum
Twisted Rope Surprise Stone Solitaire Round · Platinum
$3,360.00
The Elettra round engagement ring setting in 14K Rose Gold | RockHer
The Elettra Timeless Comfort Fit Six Prong Solitaire Round Engagement Ring Setting in 14K Rose Gold
Timeless Comfort Fit Six Prong Solitaire Round · 14K Rose Gold
$1,305.00
The Amy cushion engagement ring setting in 18K Rose Gold | RockHer
The Amy High Polish Simple Halo Cushion Cut Engagement Ring Setting in 18K Rose Gold
High Polish Simple Halo Cushion Cut · 18K Rose Gold
$3,640.00
The Cappella Linear Bezel Pavé Round Engagement Ring Setting in 14K Rose Gold
The Cappella Linear Bezel Pavé Round Engagement Ring Setting in 14K Rose Gold
Linear Bezel Pavé Round · 14K Rose Gold
$2,330.00
The Donna pear engagement ring setting in Platinum | RockHer
The Donna Cathedral French Pavé Solitaire Pear Engagement Ring Setting in 18K White Gold
Cathedral French Pavé Solitaire Pear · 18K White Gold
$2,985.00
The Florence Scalloped Pavé Halo Engagement Ring Setting for Round Diamonds in 14K Rose Gold | RockHer
The Florence Vintage Scalloped Halo Round Engagement Ring Setting in 14K Rose Gold
Vintage Scalloped Halo Round · 14K Rose Gold
$3,265.00
The Donna Cathedral Engagement Ring Setting for Round Diamonds in 18K White Gold | RockHer
The Donna Cathedral French Pavé Solitaire Round Engagement Ring Setting in 18K White Gold
Cathedral French Pavé Solitaire Round · 18K White Gold
$2,985.00
The Stevie pear engagement ring setting in 18K White Gold | RockHer
The Stevie Contemporary Channel Pear Engagement Ring Setting in 18K White Gold
Contemporary Channel Pear · 18K White Gold
$2,705.00
The Aria round engagement ring setting in Platinum | RockHer
The Aria Channel Row Pavé Halo Round Engagement Ring Setting in 18K White Gold
Channel Row Pavé Halo Round · 18K White Gold
$4,535.00
The Stevie round engagement ring setting in 18K White Gold | RockHer
The Stevie Contemporary Channel Round Engagement Ring Setting in 18K White Gold
Contemporary Channel Round · 18K White Gold
$2,705.00
The Kelly Double Claw Prong French Pavé Round Engagement Ring Setting in 18K White Gold
The Kelly Double Claw Prong French Pavé Round Engagement Ring Setting in 18K White Gold
Double Claw Prong French Pavé Round · 18K White Gold
$2,610.00
The Norah setting for cushion diamonds, made to order in Platinum | RockHer
The Norah Classic Linear French Pavé Cushion Cut Engagement Ring Setting in 18K White Gold
Classic Linear French Pavé Cushion Cut · 18K White Gold
$2,985.00
The Norah oval engagement ring setting in Platinum | RockHer
The Norah Classic Linear French Pavé Oval Engagement Ring Setting in 18K White Gold
Classic Linear French Pavé Oval · 18K White Gold
$2,985.00
The Norah princess engagement ring setting in 18K White Gold | RockHer
The Norah Classic Linear French Pavé Princess Cut Engagement Ring Setting in 18K White Gold
Classic Linear French Pavé Princess Cut · 18K White Gold
$2,705.00
The Alannah asscher engagement ring setting in Platinum | RockHer
The Alannah Luxe French Pavé Halo Asscher Cut Engagement Ring Setting in 18K White Gold
Luxe French Pavé Halo Asscher Cut · 18K White Gold
$4,975.00
The Rosina Open Intertwined Pavé Row Round Engagement Ring Setting in 14K Rose Gold
The Rosina Open Intertwined Pavé Row Round Engagement Ring Setting in 14K Rose Gold
Open Intertwined Pavé Row Round · 14K Rose Gold
$5,670.00
The Fiona Shared Prong Halo Emerald Cut Engagement Ring Setting in 18K White Gold
The Fiona Shared Prong Halo Emerald Cut Engagement Ring Setting in 18K White Gold
Shared Prong Halo Emerald Cut · 18K White Gold
$3,115.00
The Leonora round engagement ring setting in 14K Rose Gold | RockHer
The Leonora Simple Low Base Knife Edge Solitaire Round Engagement Ring Setting in 14K Rose Gold
Simple Low Base Knife Edge Solitaire Round · 14K Rose Gold
$1,675.00
The Bianca round engagement ring setting in Platinum | RockHer
The Bianca Classic Prong Halo Round Engagement Ring Setting in 18K White Gold
Classic Prong Halo Round · 18K White Gold
$3,545.00
The Celesta princess engagement ring setting in 18K White Gold | RockHer
The Celesta Channel Set Pavé Princess Cut Engagement Ring Setting in 18K White Gold
Channel Set Pavé Princess Cut · 18K White Gold
$4,105.00
The June emerald engagement ring setting in 18K White Gold | RockHer
The June Three Stone Emerald Cut Engagement Ring Setting in 18K White Gold
Three Stone Emerald Cut · 18K White Gold
$3,920.00
The Anita emerald engagement ring setting in Platinum | RockHer
The Anita Classic Three Stone Emerald Cut Engagement Ring Setting in 18K White Gold
Classic Three Stone Emerald Cut · 18K White Gold
$3,825.00
The Ellie pear engagement ring setting in 18K White Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Pear Engagement Ring Setting in 18K White Gold
Cathedral Comfort Fit Solitaire Pear · 18K White Gold
$2,610.00
The Tatyana round engagement ring setting in 18K White Gold | RockHer
The Tatyana Bypass Pavé Swirl Round Engagement Ring Setting in 18K White Gold
Bypass Pavé Swirl Round · 18K White Gold
$4,305.00
The Joplin princess engagement ring setting in 18K White Gold | RockHer
The Joplin Twisted Bypass Solitaire Princess Cut Engagement Ring Setting in 18K White Gold
Twisted Bypass Solitaire Princess Cut · 18K White Gold
$3,080.00
The Pamina round engagement ring setting in 14K Rose Gold | RockHer
The Pamina Cluster Halo Round Engagement Ring Setting in 14K Rose Gold
Cluster Halo Round · 14K Rose Gold
$5,840.00
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.