Price checker

What should a lab diamond cost?

Set the shape, size, color and clarity to see a fair price range, what the same diamond costs mined, and our pieces at that size.

Shape
Carat · Color
Clarity

Fair lab-grown price · loose stone

Comparable mined diamond · est.

Don Key pieces at this size

Estimates for the loose stone only, before setting and gold, based on typical US retail. Prices vary by cut quality and seller. Don Key standard is F–G color, VS clarity.

Same diamond. Different math.

Lab-grown vs mined

Chemically and optically the same diamond. See what you keep by choosing lab-grown.

You keep

Shop this size

Mined figures are typical US retail estimates for a comparable natural diamond (F–G, VS, round) and vary by retailer.

Size guide

See the difference

Slide to compare any two of our stones. Sizes in millimeters, prices pulled live from the collection.

Slide stone A
Slide stone B
Wider by
Face-up area
Carat weight

Round brilliant, ideal proportions. Millimeters are typical per-stone diameters; every stone is measured in-house.