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 Alice round engagement ring setting in 18K Yellow Gold | RockHer
The Alice Twisted Three Stone Round Engagement Ring Setting in 18K Yellow Gold
Twisted Three Stone Round · 18K Yellow Gold
$4,415.00
The Viola radiant engagement ring setting in 18K Yellow Gold | RockHer
The Viola Contemporary Comfort Fit Flat Shank Solitaire Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Contemporary Comfort Fit Flat Shank Solitaire Radiant Cut · 18K Yellow Gold
$2,145.00
The Carmen emerald engagement ring setting in 18K Yellow Gold | RockHer
The Carmen Beveled Edge Comfort Fit Solitaire Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Beveled Edge Comfort Fit Solitaire Emerald Cut · 18K Yellow Gold
$2,610.00
The Elena radiant engagement ring setting in 18K Yellow Gold | RockHer
The Elena Timeless Graduated Beveled Shank Solitaire Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Timeless Graduated Beveled Shank Solitaire Radiant Cut · 18K Yellow Gold
$2,705.00
The Olivia round engagement ring setting in 14K Rose Gold | RockHer
The Olivia Pavé Round Engagement Ring Setting in 14K Rose Gold
Pavé Round · 14K Rose Gold
$2,515.00
The Floria Comfort Fit Claw Prong Solitaire Emerald Cut Engagement Ring Setting in 18K Yellow Gold
The Floria Comfort Fit Claw Prong Solitaire Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Comfort Fit Claw Prong Solitaire Emerald Cut · 18K Yellow Gold
$1,805.00
The Lucille Pavé Halo Engagement Ring Setting for Round Diamonds in 14K Rose Gold | RockHer
The Lucille Shared Prong Halo Linear Side Set Round Engagement Ring Setting in 14K Rose Gold
Shared Prong Halo Linear Side Set Round · 14K Rose Gold
$3,790.00
The Floria oval engagement ring setting in 18K Yellow Gold | RockHer
The Floria Comfort Fit Claw Prong Solitaire Oval Engagement Ring Setting in 18K Yellow Gold
Comfort Fit Claw Prong Solitaire Oval · 18K Yellow Gold
$1,805.00
The Kai Scroll Gallery Halo Round Engagement Ring Setting in 14K Rose Gold
The Kai Scroll Gallery Halo Round Engagement Ring Setting in 14K Rose Gold
Scroll Gallery Halo Round · 14K Rose Gold
$2,610.00
The Floria radiant engagement ring setting in 18K Yellow Gold | RockHer
The Floria Comfort Fit Claw Prong Solitaire Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Comfort Fit Claw Prong Solitaire Radiant Cut · 18K Yellow Gold
$1,805.00
The Dixie round engagement ring setting in 14K Rose Gold | RockHer
The Dixie Double Halo Round Engagement Ring Setting in 14K Rose Gold
Double Halo Round · 14K Rose Gold
$5,190.00
The Elliott round engagement ring setting in 18K Yellow Gold | RockHer
The Elliott Hidden Halo Pavé Round Engagement Ring Setting in 18K Yellow Gold
Hidden Halo Pavé Round · 18K Yellow Gold
$2,890.00
The Shania round engagement ring setting in 14K Rose Gold | RockHer
The Shania Beaded Floral Halo Leaf Shoulders Round Engagement Ring Setting in 14K Rose Gold
Beaded Floral Halo Leaf Shoulders Round · 14K Rose Gold
$3,680.00
The Rosie round engagement ring setting in 14K Rose Gold | RockHer
The Rosie Vintage Three Stone Round Engagement Ring Setting in 14K Rose Gold
Vintage Three Stone Round · 14K Rose Gold
$5,040.00
The Lana round engagement ring setting in 18K Yellow Gold | RockHer
The Lana Secret Halo Adorned Prong Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Secret Halo Adorned Prong Solitaire Round · 18K Yellow Gold
$2,985.00
The Aria round engagement ring setting in 14K Rose Gold | RockHer
The Aria Channel Row Pavé Halo Round Engagement Ring Setting in 14K Rose Gold
Channel Row Pavé Halo Round · 14K Rose Gold
$3,810.00
The Annabelle cushion engagement ring setting in 18K Yellow Gold | RockHer
The Annabelle Hidden Pavé Basket Crown Solitaire Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Hidden Pavé Basket Crown Solitaire Cushion Cut · 18K Yellow Gold
$3,265.00
The Andrea round engagement ring setting in 14K Rose Gold | RockHer
The Andrea Three Stone Halo Round Engagement Ring Setting in 14K Rose Gold
Three Stone Halo Round · 14K Rose Gold
$4,580.00
The Tori Rounded Comfort Fit Solitaire Round Engagement Ring Setting in 14K Rose Gold
The Tori Rounded Comfort Fit Solitaire Round Engagement Ring Setting in 14K Rose Gold
Rounded Comfort Fit Solitaire Round · 14K Rose Gold
$1,585.00
The Anna round engagement ring setting in 14K Rose Gold | RockHer
The Anna Three Stone Halo Round Engagement Ring Setting in 14K Rose Gold
Three Stone Halo Round · 14K Rose Gold
$4,200.00
The Clover round engagement ring setting in 14K Rose Gold | RockHer
The Clover Knife Edge Pavé Round Engagement Ring Setting in 14K Rose Gold
Knife Edge Pavé Round · 14K Rose Gold
$3,265.00
The Bess Pavé Halo Engagement Ring Setting for Round Diamonds in 14K Rose Gold | RockHer
The Bess Love Knot Pavé Halo Round Engagement Ring Setting in 14K Rose Gold
Love Knot Pavé Halo Round · 14K Rose Gold
$4,840.00
The Elliott oval engagement ring setting in 14K Rose Gold | RockHer
The Elliott Hidden Halo Pavé Oval Engagement Ring Setting in 14K Rose Gold
Hidden Halo Pavé Oval · 14K Rose Gold
$2,610.00
The Calista round engagement ring setting in 14K Rose Gold | RockHer
The Calista Love Knot Halo Round Engagement Ring Setting in 14K Rose Gold
Love Knot Halo Round · 14K Rose Gold
$4,175.00
The Lana oval engagement ring setting in 14K Rose Gold | RockHer
The Lana Secret Halo Adorned Prong Solitaire Oval Engagement Ring Setting in 14K Rose Gold
Secret Halo Adorned Prong Solitaire Oval · 14K Rose Gold
$2,515.00
The Dionne round engagement ring setting in 14K Rose Gold | RockHer
The Dionne Diamond Pavé Halo Round Engagement Ring Setting in 14K Rose Gold
Diamond Pavé Halo Round · 14K Rose Gold
$2,610.00
The Lily emerald engagement ring setting in 14K Rose Gold | RockHer
The Lily Double Prong Three Stone Emerald Cut Engagement Ring Setting in 14K Rose Gold
Double Prong Three Stone Emerald Cut · 14K Rose Gold
$3,360.00
The Tionne Square Halo Round Engagement Ring Setting in 14K Rose Gold
The Tionne Square Halo Round Engagement Ring Setting in 14K Rose Gold
Square Halo Round · 14K Rose Gold
$3,730.00
The Nedda round engagement ring setting in 14K Rose Gold | RockHer
The Nedda Double Halo Round Engagement Ring Setting in 14K Rose Gold
Double Halo Round · 14K Rose Gold
$4,475.00
The Ariana round engagement ring setting in 14K Rose Gold | RockHer
The Ariana Swirl Halo Round Engagement Ring Setting in 14K Rose Gold
Swirl Halo Round · 14K Rose Gold
$3,545.00
The Giovanna round engagement ring setting in 14K Rose Gold | RockHer
The Giovanna Pinched Comfort Fit Claw Prong Solitaire Round Engagement Ring Setting in 14K Rose Gold
Pinched Comfort Fit Claw Prong Solitaire Round · 14K Rose Gold
$1,305.00
The Lucia round engagement ring setting in 14K Rose Gold | RockHer
The Lucia Secret Gallery French Pavé Halo Round Engagement Ring Setting in 14K Rose Gold
Secret Gallery French Pavé Halo Round · 14K Rose Gold
$3,545.00
The Musetta Shared Prong Halo Linear Band Round Engagement Ring Setting in 14K Rose Gold
The Musetta Shared Prong Halo Linear Band Round Engagement Ring Setting in 14K Rose Gold
Shared Prong Halo Linear Band Round · 14K Rose Gold
$3,640.00
The Violetta Engagement Ring Setting for Round Diamonds in 14K Rose Gold | RockHer
The Violetta Multi Layer Interweave Pavé Round Engagement Ring Setting in 14K Rose Gold
Multi Layer Interweave Pavé Round · 14K Rose Gold
$5,995.00
The Alice round engagement ring setting in 14K Rose Gold | RockHer
The Alice Twisted Three Stone Round Engagement Ring Setting in 14K Rose Gold
Twisted Three Stone Round · 14K Rose Gold
$3,640.00
The Amy round engagement ring setting in 14K Rose Gold | RockHer
The Amy High Polish Simple Halo Round Engagement Ring Setting in 14K Rose Gold
High Polish Simple Halo Round · 14K Rose Gold
$3,715.00
The Marie cushion engagement ring setting in 14K Rose Gold | RockHer
The Marie Beaded Crossover Pavé Cushion Cut Engagement Ring Setting in 14K Rose Gold
Beaded Crossover Pavé Cushion Cut · 14K Rose Gold
$4,550.00
The Mae round engagement ring setting in 14K Rose Gold | RockHer
The Mae Vintage Beaded Solitaire Round Engagement Ring Setting in 14K Rose Gold
Vintage Beaded Solitaire Round · 14K Rose Gold
$4,810.00
The Helena princess engagement ring setting in 14K Rose Gold | RockHer
The Helena Vintage Three Stone Princess Cut Engagement Ring Setting in 14K Rose Gold
Vintage Three Stone Princess Cut · 14K Rose Gold
$4,665.00
The Donna emerald engagement ring setting in Platinum | RockHer
The Donna Cathedral French Pavé Solitaire Emerald Cut Engagement Ring Setting in Platinum
Cathedral French Pavé Solitaire Emerald Cut · Platinum
$3,170.00
The Donna oval engagement ring setting in 18K White Gold | RockHer
The Donna Cathedral French Pavé Solitaire Oval Engagement Ring Setting in Platinum
Cathedral French Pavé Solitaire Oval · Platinum
$3,170.00
The Stevie round engagement ring setting in Platinum | RockHer
The Stevie Contemporary Channel Round Engagement Ring Setting in Platinum
Contemporary Channel Round · Platinum
$2,890.00
The Kelly Double Claw Prong French Pavé Round Engagement Ring Setting in Platinum
The Kelly Double Claw Prong French Pavé Round Engagement Ring Setting in Platinum
Double Claw Prong French Pavé Round · Platinum
$3,175.00
The Norah marquise engagement ring setting in Platinum | RockHer
The Norah Classic Linear French Pavé Marquise Engagement Ring Setting in Platinum
Classic Linear French Pavé Marquise · Platinum
$3,170.00
The Norah Classic Linear French Pavé Round Engagement Ring Setting in Platinum
The Norah Classic Linear French Pavé Round Engagement Ring Setting in Platinum
Classic Linear French Pavé Round · Platinum
$2,890.00
The Alannah emerald engagement ring setting in Platinum | RockHer
The Alannah Luxe French Pavé Halo Emerald Cut Engagement Ring Setting in Platinum
Luxe French Pavé Halo Emerald Cut · Platinum
$5,195.00
The Priscilla cushion engagement ring setting in Platinum | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Cushion Cut Engagement Ring Setting in Platinum
Delicate Twist Cathedral Solitaire Cushion Cut · Platinum
$2,705.00
The Priscilla princess engagement ring setting in Platinum | RockHer
The Priscilla Delicate Twist Cathedral Solitaire Princess Cut Engagement Ring Setting in Platinum
Delicate Twist Cathedral Solitaire Princess Cut · Platinum
$2,705.00
The Harmony oval engagement ring setting in Platinum | RockHer
The Harmony Twisted Vine Halo Oval Engagement Ring Setting in Platinum
Twisted Vine Halo Oval · Platinum
$4,080.00
The Kai round engagement ring setting in Platinum | RockHer
The Kai Scroll Gallery Halo Round Engagement Ring Setting in Platinum
Scroll Gallery Halo Round · Platinum
$3,545.00
The Hayley pear engagement ring setting in Platinum | RockHer
The Hayley Bezel Cathedral Solitaire Pear Engagement Ring Setting in Platinum
Bezel Cathedral Solitaire Pear · Platinum
$2,515.00
The Florence Vintage Scalloped Halo Round Engagement Ring Setting in Platinum
The Florence Vintage Scalloped Halo Round Engagement Ring Setting in Platinum
Vintage Scalloped Halo Round · Platinum
$4,040.00
The Avery Channel Pavé Three Stone Princess Cut Engagement Ring Setting in Platinum
The Avery Channel Pavé Three Stone Princess Cut Engagement Ring Setting in Platinum
Channel Pavé Three Stone Princess Cut · Platinum
$5,685.00
The Dixie Double Halo Round Engagement Ring Setting in Platinum
The Dixie Double Halo Round Engagement Ring Setting in Platinum
Double Halo Round · Platinum
$5,775.00
The Demi princess engagement ring setting in Platinum | RockHer
The Demi Delicate Split Shank Pavé Princess Cut Engagement Ring Setting in Platinum
Delicate Split Shank Pavé Princess Cut · Platinum
$3,265.00
The Calypso round engagement ring setting in 18K White Gold | RockHer
The Calypso Double Halo Round Engagement Ring Setting in Platinum
Double Halo Round · Platinum
$5,105.00
The Gladys emerald engagement ring setting in Platinum | RockHer
The Gladys Pinched Cathedral Solitaire Emerald Cut Engagement Ring Setting in Platinum
Pinched Cathedral Solitaire Emerald Cut · Platinum
$3,615.00
The Shania Beaded Floral Halo Leaf Shoulders Round Engagement Ring Setting in Platinum
The Shania Beaded Floral Halo Leaf Shoulders Round Engagement Ring Setting in Platinum
Beaded Floral Halo Leaf Shoulders Round · Platinum
$4,400.00
The Marcia round engagement ring setting in Platinum | RockHer
The Marcia Bezel Halo Channel Band Round Engagement Ring Setting in Platinum
Bezel Halo Channel Band Round · Platinum
$4,105.00
The Aria round engagement ring setting in Platinum | RockHer
The Aria Channel Row Pavé Halo Round Engagement Ring Setting in Platinum
Channel Row Pavé Halo Round · Platinum
$4,925.00
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.