1 Carat Lab Grown Diamonds
Loose lab-grown diamonds from 1.00 to 1.19 carats, each with an IGI or GIA grading report.
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About 1 Carat Lab Grown Diamonds
A 1 carat diamond is a classic size for an engagement ring. This search opens on loose lab-grown diamonds from 1.00 to 1.19 carats in all nine shapes, each with an IGI or GIA grading report. Quality filters open on G color or better, VS2 clarity or better and an Excellent cut; widen any of them to see more. Shape changes how big a carat looks: an oval, pear or marquise spreads its weight over a longer outline and usually looks larger face-up than a round. Each diamond is sourced for your order and arrives in about 2 to 3 weeks.
Looking at other sizes? Search 1.5 carats, 2 carats or 3 carats lab-grown diamonds.
From our guides
1 Carat Diamond Questions
How big is a 1 carat diamond?
A 1 carat round brilliant measures about 6.5 mm across. Other shapes of the same weight have different outlines, and elongated shapes such as ovals usually look larger face-up.
Does a 1 carat lab grown diamond look different from a natural one?
No. A lab-grown and a natural diamond of the same size and quality look the same; only a gemological lab can tell them apart, and your grading report states the origin.
Can I set a loose 1 carat diamond in an engagement ring?
Yes. Book a video or phone appointment and we will help you pair it with one of our settings. Loose diamonds are final sale, so we are glad to help you choose first.
Every Loose Diamond
IGI or GIA Graded
Every diamond comes with its IGI or GIA grading report.
Free US Shipping
Free FedEx shipping within the US; international orders ship for a flat $75.
Sourced for You
Each diamond is sourced for your order and arrives in about 2 to 3 weeks.
Final Sale
Because each diamond is sourced for your order, loose diamonds are final sale.
