Home 3 Carat Diamond Rings

3 Carat Diamond Rings

Fine jewelry in solid gold and platinum, made to order in our Los Angeles atelier.

The Agnes diamond engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Briolette Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Briolette · 18K White Gold
From $1,805.00
The Agnes diamond engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Shield Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Shield · 18K White Gold
From $1,805.00
The Agnes kite engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Kite Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Kite · 18K White Gold
From $1,805.00
The Agnes marquise engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Marquise Engagement Ring Setting in Platinum
Bezel Solitaire In Marquise · Platinum
From $2,140.00
The Agnes emerald engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Emerald Cut Engagement Ring Setting in Platinum
Bezel Solitaire In Emerald Cut · Platinum
From $2,140.00
The Agnes diamond engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Hexagon Engagement Ring Setting in Platinum
Bezel Solitaire In Hexagon · Platinum
From $2,140.00
The Agnes diamond engagement ring setting in 18K White Gold | RockHer
The Agnes Square Bezel Solitaire In Step Engagement Ring Setting in 18K White Gold
Square Bezel Solitaire In Step · 18K White Gold
From $1,805.00
The Agnes princess engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Princess Cut Engagement Ring Setting in Platinum
Bezel Solitaire In Princess Cut · Platinum
From $2,140.00
The Agnes radiant engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Radiant Cut Engagement Ring Setting in Platinum
Bezel Solitaire In Radiant Cut · Platinum
From $2,140.00
The Agnes round engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Round Engagement Ring Setting in Platinum
Bezel Solitaire In Round · Platinum
From $2,140.00
The Agnes diamond engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Half Moon Engagement Ring Setting in Platinum
Bezel Solitaire In Half Moon · Platinum
From $2,140.00
The Agnes bezel solitaire trillion engagement ring setting in 18k white gold, alt-angle hero, RockHer
The Agnes Bezel Solitaire In Trillion Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Trillion · 18K White Gold
From $1,805.00
The Agnes heart engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Heart Engagement Ring Setting in Platinum
Bezel Solitaire In Heart · Platinum
From $2,140.00
The Agnes princess engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Princess Cut Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Princess Cut · 18K White Gold
From $1,805.00
The Agnes bezel solitaire old european cut engagement ring setting in 18k white gold, alt-angle hero, RockHer
The Agnes Bezel Solitaire In Old European Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Old European · 18K White Gold
From $1,805.00
The Agnes diamond engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Shield Engagement Ring Setting in Platinum
Bezel Solitaire In Shield · Platinum
From $2,140.00
The Agnes kite engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Kite Engagement Ring Setting in Platinum
Bezel Solitaire In Kite · Platinum
From $2,140.00
The Agnes diamond engagement ring setting in Platinum | RockHer
The Agnes Square Bezel Solitaire In Step Engagement Ring Setting in Platinum
Square Bezel Solitaire In Step · Platinum
From $2,140.00
The Agnes Bezel Solitaire Engagement Ring Setting for Cushion Diamonds in Platinum | RockHer
The Agnes Bezel Solitaire In Cushion Cut Engagement Ring Setting in Platinum
Bezel Solitaire In Cushion Cut · Platinum
From $2,140.00
The Agnes oval engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Oval Engagement Ring Setting in Platinum
Bezel Solitaire In Oval · Platinum
From $2,140.00
The Agnes pear engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Pear Engagement Ring Setting in Platinum
Bezel Solitaire In Pear · Platinum
From $2,140.00
The Agnes baguette engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Tapered Baguette Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Tapered Baguette · 18K White Gold
From $1,805.00
The Agnes marquise engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Marquise Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Marquise · 18K White Gold
From $1,805.00
The Agnes diamond engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Half Moon Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Half Moon · 18K White Gold
From $1,805.00
The Agnes trillion engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Trillion Engagement Ring Setting in Platinum
Bezel Solitaire In Trillion · Platinum
From $2,140.00
The Agnes diamond engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Rose Cut Engagement Ring Setting in Platinum
Bezel Solitaire In Rose Cut · Platinum
From $2,140.00
The Agnes asscher engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Asscher Cut Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Asscher Cut · 18K White Gold
From $1,805.00
The Agnes oval engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Oval Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Oval · 18K White Gold
From $1,805.00
The Agnes asscher engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Asscher Cut Engagement Ring Setting in Platinum
Bezel Solitaire In Asscher Cut · Platinum
From $2,140.00
The Agnes heart engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Heart Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Heart · 18K White Gold
From $1,805.00
The Agnes baguette engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Tapered Baguette Engagement Ring Setting in Platinum
Bezel Solitaire In Tapered Baguette · Platinum
From $2,140.00
The Agnes emerald engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Emerald Cut Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Emerald Cut · 18K White Gold
From $1,805.00
The Agnes radiant engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Radiant Cut Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Radiant Cut · 18K White Gold
From $1,805.00
The Agnes diamond engagement ring setting in Platinum | RockHer
The Agnes Bezel Solitaire In Briolette Engagement Ring Setting in Platinum
Bezel Solitaire In Briolette · Platinum
From $2,140.00
The Agnes bezel solitaire old european cut engagement ring setting in platinum, alt-angle hero, RockHer
The Agnes Bezel Solitaire In Old European Engagement Ring Setting in Platinum
Bezel Solitaire In Old European · Platinum
From $2,140.00
The Agnes diamond engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Rose Cut Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Rose Cut · 18K White Gold
From $1,805.00
The Agnes diamond engagement ring setting in 18K White Gold | RockHer
The Agnes Bezel Solitaire In Hexagon Engagement Ring Setting in 18K White Gold
Bezel Solitaire In Hexagon · 18K White Gold
From $1,805.00
Agnes Select Bezel Solitaire In Trillion Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Trillion Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Trillion · 18K Yellow Gold
From $1,945.00
The Agnes baguette engagement ring setting in 18K Yellow Gold | RockHer
The Agnes Select Bezel Solitaire In Tapered Baguette Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Tapered Baguette · 18K Yellow Gold
From $1,945.00
Agnes Select Bezel Solitaire In Heart Lab Diamond Engagement Ring in 18K White Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Heart Lab Diamond Engagement Ring in 18K White Gold
Select Bezel Solitaire In Heart · 18K White Gold
From $1,930.00
Agnes Select Bezel Solitaire In Emerald Cut Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Emerald Cut Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Emerald Cut · 18K Yellow Gold
From $1,930.00
Agnes Select Bezel Solitaire In Cushion Cut Lab Diamond Engagement Ring in 18K Yellow Gold, front view | RockHer
The Agnes Select Bezel Solitaire In Cushion Cut Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Cushion Cut · 18K Yellow Gold
From $1,930.00
Agnes Select Bezel Solitaire In Princess Cut Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Princess Cut Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Princess Cut · 18K Yellow Gold
From $1,930.00
Agnes Select Bezel Solitaire In Round Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Round Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Round · 18K Yellow Gold
From $1,930.00
Agnes Select Bezel Solitaire In Briolette Lab Diamond Engagement Ring in Platinum, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Briolette Lab Diamond Engagement Ring in Platinum
Select Bezel Solitaire In Briolette · Platinum
From $2,230.00
Agnes Select Bezel Solitaire In Pear Lab Diamond Engagement Ring in 18K White Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Pear Lab Diamond Engagement Ring in 18K White Gold
Select Bezel Solitaire In Pear · 18K White Gold
From $1,930.00
Agnes Select Bezel Solitaire In Rose Cut Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Rose Cut Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Rose Cut · 18K Yellow Gold
From $1,945.00
Agnes Select Bezel Solitaire In Radiant Cut Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Radiant Cut Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Radiant Cut · 18K Yellow Gold
From $1,930.00
Agnes Select Bezel Solitaire In Asscher Cut Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Asscher Cut Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Asscher Cut · 18K Yellow Gold
From $1,930.00
Agnes Select Bezel Solitaire In Asscher Cut Lab Diamond Engagement Ring in Platinum, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Asscher Cut Lab Diamond Engagement Ring in Platinum
Select Bezel Solitaire In Asscher Cut · Platinum
From $2,215.00
Agnes Select Square Bezel Solitaire In Step Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Square Bezel Solitaire In Step Lab Diamond Engagement Ring in 18K Yellow Gold
Select Square Bezel Solitaire In Step · 18K Yellow Gold
From $1,945.00
Agnes Select Bezel Solitaire In Radiant Cut Lab Diamond Engagement Ring in Platinum, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Radiant Cut Lab Diamond Engagement Ring in Platinum
Select Bezel Solitaire In Radiant Cut · Platinum
From $2,215.00
Agnes Select Bezel Solitaire In Pear Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Pear Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Pear · 18K Yellow Gold
From $1,930.00
Agnes Select Bezel Solitaire In Old European Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Old European Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Old European · 18K Yellow Gold
From $1,945.00
Agnes Select Bezel Solitaire In Heart Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Heart Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Heart · 18K Yellow Gold
From $1,930.00
Agnes Select Bezel Solitaire In Hexagon Lab Diamond Engagement Ring in 18K White Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Hexagon Lab Diamond Engagement Ring in 18K White Gold
Select Bezel Solitaire In Hexagon · 18K White Gold
From $1,945.00
Agnes Select Bezel Solitaire In Round Lab Diamond Engagement Ring in 18K White Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Round Lab Diamond Engagement Ring in 18K White Gold
Select Bezel Solitaire In Round · 18K White Gold
From $1,930.00
Agnes Select Bezel Solitaire In Shield Lab Diamond Engagement Ring in 18K White Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Shield Lab Diamond Engagement Ring in 18K White Gold
Select Bezel Solitaire In Shield · 18K White Gold
From $1,945.00
Agnes Select Bezel Solitaire In Hexagon Lab Diamond Engagement Ring in 18K Yellow Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Hexagon Lab Diamond Engagement Ring in 18K Yellow Gold
Select Bezel Solitaire In Hexagon · 18K Yellow Gold
From $1,945.00
Agnes Select Bezel Solitaire In Radiant Cut Lab Diamond Engagement Ring in 18K White Gold, shown on hand, angled | RockHer
The Agnes Select Bezel Solitaire In Radiant Cut Lab Diamond Engagement Ring in 18K White Gold
Select Bezel Solitaire In Radiant Cut · 18K White Gold
From $1,930.00
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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Engagement Rings
Engagement Rings
Made to order in Los Angeles
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Wedding Bands
Wedding Bands
For him & for her
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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

Show-Stopping Brilliance: Explore 3 Carat Diamond Rings

Make a lasting impression with our breathtaking collection of 3 carat diamond rings. Known for their impressive size and dazzling sparkle, these rings are perfect for those who want to celebrate love with a bold and luxurious statement piece. Whether for engagements, anniversaries, or special occasions, a 3 carat diamond ring symbolizes grandeur and timeless elegance.

Why Choose 3 Carat Diamond Rings?

A 3 carat diamond ring offers an eye-catching size combined with exceptional brilliance. Its larger carat weight means the diamond commands attention, yet with the right cut and setting, it remains elegant and wearable.

Popular Styles Featuring 3 Carat Diamonds:

  • Solitaire Rings: Classic and timeless, showcasing the diamond's natural beauty
  • Halo Settings: Surround the center diamond with smaller stones for extra sparkle
  • Three-Stone Designs: Symbolize your journey with complementary side stones
  • Vintage-Inspired Rings: Featuring intricate detailing and romantic flair
  • Modern Minimalist Bands: Sleek, understated settings that highlight the diamond

Customization Options:
  • Diamond Cuts: Round brilliant, princess, cushion, emerald, and more
  • Metal Types: 14k or 18k yellow, white, rose gold, and platinum
  • Settings: Prong, bezel, pave, and tension for style and security
  • Certification: GIA or IGI certified diamonds to guarantee quality and authenticity

Expert Tip:
Prioritize the diamond’s cut to maximize sparkle and brilliance, especially for larger stones. Consider protective settings such as bezels or halos to safeguard your investment.

Our 3 carat diamond rings collection combines grandeur and expert craftsmanship, perfect for celebrating your most memorable moments with unmatched brilliance.