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 Elettra Timeless Comfort Fit Six Prong Solitaire Round Engagement Ring Setting in Platinum
The Elettra Timeless Comfort Fit Six Prong Solitaire Round Engagement Ring Setting in Platinum
Timeless Comfort Fit Six Prong Solitaire Round · Platinum
$2,140.00
The Joni emerald engagement ring setting in 14K Rose Gold | RockHer
The Joni Hidden Halo Solitaire Emerald Cut Engagement Ring Setting in 14K Rose Gold
Hidden Halo Solitaire Emerald Cut · 14K Rose Gold
$1,865.00
The Floria emerald engagement ring setting in Platinum | RockHer
The Floria Comfort Fit Claw Prong Solitaire Emerald Cut Engagement Ring Setting in Platinum
Comfort Fit Claw Prong Solitaire Emerald Cut · Platinum
$2,140.00
The Olivia round engagement ring setting in Platinum | RockHer
The Olivia Pavé Round Engagement Ring Setting in Platinum
Pavé Round · Platinum
$3,200.00
The Giovanna round engagement ring setting in Platinum | RockHer
The Giovanna Pinched Comfort Fit Claw Prong Solitaire Round Engagement Ring Setting in Platinum
Pinched Comfort Fit Claw Prong Solitaire Round · Platinum
$2,140.00
The Gladys oval engagement ring setting in 18K Yellow Gold | RockHer
The Gladys Pinched Cathedral Solitaire Oval Engagement Ring Setting in 18K Yellow Gold
Pinched Cathedral Solitaire Oval · 18K Yellow Gold
$3,080.00
The June emerald engagement ring setting in Platinum | RockHer
The June Three Stone Emerald Cut Engagement Ring Setting in Platinum
Three Stone Emerald Cut · Platinum
$4,105.00
The Diana oval engagement ring setting in Platinum | RockHer
The Diana Tapered Baguette Three Stone Oval Engagement Ring Setting in Platinum
Tapered Baguette Three Stone Oval · Platinum
$2,610.00
The Linda round engagement ring setting in 14K Rose Gold | RockHer
The Linda Scalloped Halo Floral Leaf Round Engagement Ring Setting in 14K Rose Gold
Scalloped Halo Floral Leaf Round · 14K Rose Gold
$2,330.00
The Tina cushion engagement ring setting in Platinum | RockHer
The Tina Triple Row Pavé Cushion Cut Engagement Ring Setting in Platinum
Triple Row Pavé Cushion Cut · Platinum
$4,370.00
The Olivia round engagement ring setting in Platinum | RockHer
The Olivia Pavé Round Engagement Ring Setting in 18K White Gold
Pavé Round · 18K White Gold
$3,080.00
The Norah Classic Linear French Pavé Pear Engagement Ring Setting in 14K Rose Gold
The Norah Classic Linear French Pavé Pear Engagement Ring Setting in 14K Rose Gold
Classic Linear French Pavé Pear · 14K Rose Gold
$2,145.00
The Kai round engagement ring setting in 18K Yellow Gold | RockHer
The Kai Scroll Gallery Halo Round Engagement Ring Setting in 18K Yellow Gold
Scroll Gallery Halo Round · 18K Yellow Gold
$3,265.00
The Carole Split Shank Engagement Ring Setting for Emerald Cut Diamonds in 14K Rose Gold | RockHer
The Carole Two Row Pavé Split Shank Emerald Cut Engagement Ring Setting in 14K Rose Gold
Two Row Pavé Split Shank Emerald Cut · 14K Rose Gold
$3,615.00
The Tori cushion engagement ring setting in 18K Yellow Gold | RockHer
The Tori Rounded Comfort Fit Solitaire Cushion Cut Engagement Ring Setting in 18K Yellow Gold
Rounded Comfort Fit Solitaire Cushion Cut · 18K Yellow Gold
$2,050.00
The Florence Scalloped Pavé Halo Engagement Ring Setting for Round Diamonds in 18K Yellow Gold | RockHer
The Florence Vintage Scalloped Halo Round Engagement Ring Setting in 18K Yellow Gold
Vintage Scalloped Halo Round · 18K Yellow Gold
$3,785.00
The Caroline round engagement ring setting in 18K Yellow Gold | RockHer
The Caroline Three Stone Round Engagement Ring Setting in 18K Yellow Gold
Three Stone Round · 18K Yellow Gold
$3,450.00
The Dixie round engagement ring setting in 18K Yellow Gold | RockHer
The Dixie Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$5,840.00
The Calypso Pavé Halo Engagement Ring Setting for Round Diamonds in 18K Yellow Gold | RockHer
The Calypso Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$5,340.00
The Shania round engagement ring setting in 18K Yellow Gold | RockHer
The Shania Beaded Floral Halo Leaf Shoulders Round Engagement Ring Setting in 18K Yellow Gold
Beaded Floral Halo Leaf Shoulders Round · 18K Yellow Gold
$4,135.00
The Rosie round engagement ring setting in 18K Yellow Gold | RockHer
The Rosie Vintage Three Stone Round Engagement Ring Setting in 18K Yellow Gold
Vintage Three Stone Round · 18K Yellow Gold
$5,525.00
The Aria round engagement ring setting in 18K Yellow Gold | RockHer
The Aria Channel Row Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Channel Row Pavé Halo Round · 18K Yellow Gold
$4,460.00
The Kelly pear engagement ring setting in Platinum | RockHer
The Kelly Double Claw Prong French Pavé Pear Engagement Ring Setting in Platinum
Double Claw Prong French Pavé Pear · Platinum
$2,890.00
The Andrea round engagement ring setting in 18K Yellow Gold | RockHer
The Andrea Three Stone Halo Round Engagement Ring Setting in 18K Yellow Gold
Three Stone Halo Round · 18K Yellow Gold
$5,000.00
The Norah pear engagement ring setting in 18K White Gold | RockHer
The Norah Classic Linear French Pavé Pear Engagement Ring Setting in Platinum
Classic Linear French Pavé Pear · Platinum
$2,795.00
The Anna round engagement ring setting in 18K Yellow Gold | RockHer
The Anna Three Stone Halo Round Engagement Ring Setting in 18K Yellow Gold
Three Stone Halo Round · 18K Yellow Gold
$4,675.00
The Carole Two Row Pavé Split Shank Emerald Cut Engagement Ring Setting in Platinum
The Carole Two Row Pavé Split Shank Emerald Cut Engagement Ring Setting in Platinum
Two Row Pavé Split Shank Emerald Cut · Platinum
$4,390.00
The Bess round engagement ring setting in 18K Yellow Gold | RockHer
The Bess Love Knot Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Love Knot Pavé Halo Round · 18K Yellow Gold
$5,760.00
The Caroline Three Stone Emerald Cut Engagement Ring Setting in Platinum
The Caroline Three Stone Emerald Cut Engagement Ring Setting in Platinum
Three Stone Emerald Cut · Platinum
$3,920.00
The Calista Love Knot Halo Round Engagement Ring Setting in 18K Yellow Gold
The Calista Love Knot Halo Round Engagement Ring Setting in 18K Yellow Gold
Love Knot Halo Round · 18K Yellow Gold
$5,095.00
The Dylan Petite French Pavé Halo Oval Engagement Ring Setting in Platinum
The Dylan Petite French Pavé Halo Oval Engagement Ring Setting in Platinum
Petite French Pavé Halo Oval · Platinum
$3,360.00
The Cappella round engagement ring setting in 18K Yellow Gold | RockHer
The Cappella Linear Bezel Pavé Round Engagement Ring Setting in 18K Yellow Gold
Linear Bezel Pavé Round · 18K Yellow Gold
$2,795.00
The Adriana cushion engagement ring setting in 18K White Gold | RockHer
The Adriana Cathedral Pavé Halo Cushion Cut Engagement Ring Setting in 18K White Gold
Cathedral Pavé Halo Cushion Cut · 18K White Gold
$3,875.00
The Dionne round engagement ring setting in 18K Yellow Gold | RockHer
The Dionne Diamond Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Diamond Pavé Halo Round · 18K Yellow Gold
$2,890.00
The Elliott Hidden Halo Pavé Round Engagement Ring Setting in 18K White Gold
The Elliott Hidden Halo Pavé Round Engagement Ring Setting in 18K White Gold
Hidden Halo Pavé Round · 18K White Gold
$5,830.00
The Tionne round engagement ring setting in 18K Yellow Gold | RockHer
The Tionne Square Halo Round Engagement Ring Setting in 18K Yellow Gold
Square Halo Round · 18K Yellow Gold
$4,375.00
The Dolly Double Hidden Halo Solitaire Round Engagement Ring Setting in Platinum
The Dolly Double Hidden Halo Solitaire Round Engagement Ring Setting in Platinum
Double Hidden Halo Solitaire Round · Platinum
$5,270.00
The Nera round engagement ring setting in 18K Yellow Gold | RockHer
The Nera Floral Split Shank Halo Round Engagement Ring Setting in 18K Yellow Gold
Floral Split Shank Halo Round · 18K Yellow Gold
$3,920.00
The Abbey radiant engagement ring setting in Platinum | RockHer
The Abbey Hidden Halo Pavé Radiant Cut Engagement Ring Setting in Platinum
Hidden Halo Pavé Radiant Cut · Platinum
$3,170.00
The Ariana round engagement ring setting in 18K Yellow Gold | RockHer
The Ariana Swirl Halo Round Engagement Ring Setting in 18K Yellow Gold
Swirl Halo Round · 18K Yellow Gold
$3,990.00
The Leonora round engagement ring setting in 18K Yellow Gold | RockHer
The Leonora Simple Low Base Knife Edge Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Simple Low Base Knife Edge Solitaire Round · 18K Yellow Gold
$2,145.00
The Calypso round engagement ring setting in 14K Rose Gold | RockHer
The Calypso Double Halo Round Engagement Ring Setting in 14K Rose Gold
Double Halo Round · 14K Rose Gold
$4,795.00
The Eartha upper hidden halo solitaire engagement ring setting, shown in 18K White Gold | RockHer
The Eartha Upper Hidden Halo Solitaire Round Engagement Ring Setting in Platinum
Upper Hidden Halo Solitaire Round · Platinum
$2,515.00
The Nedda round engagement ring setting in 18K Yellow Gold | RockHer
The Nedda Double Halo Round Engagement Ring Setting in 18K Yellow Gold
Double Halo Round · 18K Yellow Gold
$4,840.00
The Jennifer round engagement ring setting in 18K Yellow Gold | RockHer
The Jennifer Delicate Three Stone Halo Round Engagement Ring Setting in 18K Yellow Gold
Delicate Three Stone Halo Round · 18K Yellow Gold
$4,740.00
The Norah emerald engagement ring setting in 18K Yellow Gold | RockHer
The Norah Classic Linear French Pavé Emerald Cut Engagement Ring Setting in 18K Yellow Gold
Classic Linear French Pavé Emerald Cut · 18K Yellow Gold
$2,890.00
The Elsa round engagement ring setting in 18K Yellow Gold | RockHer
The Elsa Timeless Comfort Fit Rounded Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Timeless Comfort Fit Rounded Solitaire Round · 18K Yellow Gold
$2,000.00
The Etta oval engagement ring setting in 18K Yellow Gold | RockHer
The Etta Classic Shared Prong Halo Oval Engagement Ring Setting in 18K Yellow Gold
Classic Shared Prong Halo Oval · 18K Yellow Gold
$3,710.00
The Giovanna round engagement ring setting in 18K Yellow Gold | RockHer
The Giovanna Pinched Comfort Fit Claw Prong Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Pinched Comfort Fit Claw Prong Solitaire Round · 18K Yellow Gold
$1,805.00
The Harmony round engagement ring setting in 18K Yellow Gold | RockHer
The Harmony Twisted Vine Halo Round Engagement Ring Setting in 18K Yellow Gold
Twisted Vine Halo Round · 18K Yellow Gold
$3,785.00
The Lucia round engagement ring setting in 18K Yellow Gold | RockHer
The Lucia Secret Gallery French Pavé Halo Round Engagement Ring Setting in 18K Yellow Gold
Secret Gallery French Pavé Halo Round · 18K Yellow Gold
$4,015.00
The Carrie round engagement ring setting in 18K Yellow Gold | RockHer
The Carrie Pavé Round Engagement Ring Setting in 18K Yellow Gold
Pavé Round · 18K Yellow Gold
$2,425.00
The Musetta round engagement ring setting in 18K Yellow Gold | RockHer
The Musetta Shared Prong Halo Linear Band Round Engagement Ring Setting in 18K Yellow Gold
Shared Prong Halo Linear Band Round · 18K Yellow Gold
$3,990.00
The Jessie radiant engagement ring setting in 18K Yellow Gold | RockHer
The Jessie Split Shank French Pavé Radiant Cut Engagement Ring Setting in 18K Yellow Gold
Split Shank French Pavé Radiant Cut · 18K Yellow Gold
$4,070.00
The Pamina Engagement Ring Setting for Round Diamonds in 18K Yellow Gold | RockHer
The Pamina Cluster Halo Round Engagement Ring Setting in 18K Yellow Gold
Cluster Halo Round · 18K Yellow Gold
$6,695.00
The Ellie marquise engagement ring setting in 18K Yellow Gold | RockHer
The Ellie Cathedral Comfort Fit Solitaire Marquise Engagement Ring Setting in 18K Yellow Gold
Cathedral Comfort Fit Solitaire Marquise · 18K Yellow Gold
$2,515.00
The Rosina round engagement ring setting in 18K Yellow Gold | RockHer
The Rosina Open Intertwined Pavé Row Round Engagement Ring Setting in 18K Yellow Gold
Open Intertwined Pavé Row Round · 18K Yellow Gold
$6,495.00
Oval three stone engagement ring in 18K yellow gold
The Anita Classic Three Stone Oval Engagement Ring Setting in 18K Yellow Gold
Classic Three Stone Oval · 18K Yellow Gold
$3,640.00
The Violetta Engagement Ring Setting for Round Diamonds in 18K Yellow Gold | RockHer
The Violetta Multi Layer Interweave Pavé Round Engagement Ring Setting in 18K Yellow Gold
Multi Layer Interweave Pavé Round · 18K Yellow Gold
$7,175.00
The Gladys round engagement ring setting in 18K Yellow Gold | RockHer
The Gladys Pinched Cathedral Solitaire Round Engagement Ring Setting in 18K Yellow Gold
Pinched Cathedral Solitaire Round · 18K Yellow Gold
$2,985.00
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.