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1 Carat Diamond Engagement Rings

1 Carat Diamond Engagement Rings

20 pieces

Every ring here holds a center diamond of 1 carat or a little more, up to about 1.3 carats. The centers are round, marquise, pear, oval, princess, radiant and heart; some are lab-grown diamonds, and each listing names where its center came from. A few sit in halos and hidden halos, and a few are bridal sets sold with their band.

Showing 20 of 20 total
14K
Lab-grown
1 ct marquise diamond ring with gold band and round diamond accents.
Best Seller
$1,250

14K Gold Marquise Lab-Grown Diamond Engagement Ring 1 CT 71336

14K

14K
Lab-grown
Yellow gold ring with marquise-cut diamond and hidden halo of smaller diamonds on band.
Best Seller
$1,550

14K Gold Marquise Hidden Halo Lab-Grown Diamond Ring 71048

14K · 1.4 mm

14K
Lab-grown
White gold ring with heart-shaped diamond center and diamond-accented band.
Best Seller
$1,200

14K Gold Heart Lab-Grown Diamond Ring 70846

14K

14K
Lab-grown
Radiant Cut Diamond Engagement Ring 68658 - Image 1
from
$4,400

14K Gold Radiant Cut Lab-Grown Diamond Engagement Ring 68658

14K

14K
Natural
14K White Gold Diamond Engagement Ring 66139 - Image 1
from
$14,200

14K White Gold Diamond Engagement Ring 66139

14K

14K
Lab-grown
Pear cut 1 carat diamond engagement ring in a three-prong setting with round accent stones on the band
$1,250

14K Gold 1 Ct Mirabella Pear Lab-Grown Diamond Engagement Ring 71608

14K

18K
Natural
Custom diamond engagement ring with round center stone in yellow gold-tone setting – front-face angle
$9,150

18K Gold Custom Diamond Engagement Ring 64502

18K · 4.3 g

14K
Lab-grown
Yellow gold engagement ring with princess cut diamond center and twisted diamond-accented band.
from
$1,350

14K Gold Princess Cut Lab-Grown Diamond Engagement Ring 71575

14K

14K
Natural
Round diamond engagement ring in yellow gold – four-prong solitaire with round accent stones along the band
from
$18,950

14K Gold Classic Round Engagement Diamond Ring 65076

14K

14K
Natural
Prong Diamond Engagement Ring 41455 - Image 1
from
$13,050

14K Gold Prong Diamond Engagement Ring 41455

14K

14K
Natural
Prong Diamond Engagement Halo Ring 57040 - Image 1
from
$6,450

14K Gold Prong Diamond Engagement Halo Ring 57040

14K

14K
Lab-grown
Engagement Diamond Ring (Lab) 68779 - Image 1
from
$3,750

14K Gold Engagement Diamond Ring (Lab) 68779

14K

14K
Natural
Engagement ring set with a round prong-set center stone and fitted band
Best Seller
from
$12,400

Prong Diamond Engagement Ring Set 44600

14K

14K
Natural
Custom Made Diamond Engagment Ring 67469 - Image 1
$10,300

14K Gold Custom Made Diamond Engagment Ring 67469

14K

PLAT
Lab-grown
Platinum Engagement Ring Set 68941 - Image 1
from
$5,600

Platinum Lab-Grown Diamond Engagement Ring Set 68941

Platinum

14K
Natural
Diamond Engagement Ring 68917 - Image 1
from
$11,600

14K Gold Diamond Engagement Ring 68917

14K

18K
Natural
Signature Oval Diamond Engagement Ring in 18K gold
from
$15,200

18K Gold Signature Oval Diamond Engagement Ring 68837

18K

14K
Lab-grown
Custom Made Skull Diamond Engagement Ring 68536 - Image 1
$5,150

14K Gold Custom Made Skull Lab-Grown Diamond Engagement Ring 68536

14K

18K
Natural
18K Gold Diamond Engagement Ring 67497 - Image 1
from
$15,200

18K Gold Diamond Engagement Ring 67497

18K

PLAT
Natural
Marquise halo diamond engagement ring in yellow gold – front view showing elongated center stone and round brilliant halo
$15,400

Marquise Halo Diamond Engagement Ring 43566

Platinum

About this collection
ABOUT THIS COLLECTION

One Carat in the Center, Up to About 1.3

Want a 1 carat center in a shape or setting not shown here? Start a custom engagement ring on the ring builder, and we will be in touch about it.

How big is 1 carat? A 1 carat round is about 6.5 mm across. At 1 carat an oval is about 8 by 6 mm and a marquise about 10.5 by 5 mm, so both look bigger than the round; the diamond size chart shows every shape. Step up to 2 carat engagement rings or 3 carat engagement rings, or see every engagement ring for women and all lab-grown diamond engagement rings.

1 carat engagement rings at a glance

  • Center: 1 carat to about 1.3 carats.
  • Shapes: round, marquise, pear, oval, princess, radiant and heart.
  • Center diamonds: some lab-grown; each listing names the center's origin.
  • Grades, where the listing gives them: most D to G color.
  • Reports: a few centers come with an IGI report, named on the listing.
  • Metal: most 14K gold, a few 18K and platinum; most offered in white or yellow gold.
  • Sizes: all in half sizes.
  • Made to order: nearly all are made in her size after you order; the ring's own page gives its ship time.

Questions about 1 carat diamond rings

Does 1 carat mean the center or the whole ring? On this page it is the center stone. Total carat weight adds every stone, so a halo raises it without changing the center; read the center carat on the listing.

Which shape looks biggest at 1 carat? The marquise and the oval: at 1 carat both look bigger than a 6.5 mm round.

How do I find her size? Each listing gives its ring sizes, and the ring size chart shows how to measure at home.

Questions about a ring? Start a live chat on this page, or call or text 212-872-9692; a person answers from 10 AM ET.

To see them in person, visit our showroom on 47th Street, where every stone is shown in person or on video before you decide.

2 Carat Diamond Engagement Rings 3 Carat Lab-Grown Diamond Engagement Rings Lab Grown