Black Friday (24 November 2023) and Cyber Monday are some of the busiest days of the year for jewelry in the USA. Lab-grown diamonds are a big part of that, and prices can look irresistible. A good deal is about more than the percentage off, though. Here is how to tell.

1. Compare the diamond, not the discount

"50% off" means little if the original price was inflated. Compare stones on their carat weight, cut, color and clarity, then compare final prices. A 1.00-carat G VS1 with an Excellent cut is a very different stone from a 1.00-carat J SI2 with a Good cut.

2. Check the grading report

For stones above half a carat, ask for an IGI or GIA report. The report should:

  • state that the diamond is laboratory-grown
  • match the stone's measurements and carat weight
  • have a report number you can verify on the lab's website
  • show the report number laser-inscribed on the girdle

3. Prioritize cut

Cut decides sparkle. For round diamonds, aim for Excellent or Ideal. For fancy shapes, look at the length-to-width ratio and photos or videos to check for a dark "bow-tie" across the middle.

4. Know what a fair price looks like

Lab-grown diamond prices have fallen significantly as production has grown, which is great for buyers. It also means an older price tag may be out of date. Check a few retailers and look at current per-carat pricing before you commit. Our price trend explainer explains why prices move.

5. Read the return policy

Holiday purchases should come with a clear return window, ideally one that runs past the holidays. Check who pays return shipping and whether custom or engraved pieces are excluded.

6. Look at the setting

A beautiful diamond deserves a well-made setting. Check the metal (14K or 18K gold, or platinum), prong thickness and finish.

7. Don't forget insurance

For engagement rings and significant pieces, arrange insurance as soon as you buy. A grading report and invoice make that straightforward.

For US jewelers

If you run a store and want to build your own lab-grown range rather than buy finished pieces, see how jewelers source loose stones from India or contact us.