Round Lab Grown Diamonds
Loose round lab-grown diamonds, each with an IGI or GIA grading report.
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About Round Lab Grown Diamonds
The round brilliant is the most popular diamond shape and the one cut for the most sparkle, with 57 or 58 facets that also hide small inclusions well. This search shows loose round lab-grown diamonds only, 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. For a round, cut matters most: an Excellent or Ideal cut grade returns the most light. Open any diamond to see its photos, its report and its measurements; each is sourced for your order and arrives in about 2 to 3 weeks.
From our guides
Round Diamond Questions
What cut grade should I choose for a round diamond?
Excellent or Ideal. Cut decides how much light a round diamond returns, so it is the grade most worth prioritizing; this search opens on Excellent and better.
Why does a round diamond cost more per carat?
Cutting a round brilliant removes more of the rough crystal, so a round typically costs more per carat than an oval or pear of the same weight.
Can I set a loose round 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.
