Certified stones, bought safely.
Every stone is checked against its laboratory report and sold by a ✓ Verified store. You pay CGEMX, not a stranger, and you pay the price you see. See it first through a CGEMX inspection or at the CGEMX viewing facility. Vault Trade, for holding and trading the finest untreated stones, opens next.
Bought through CGEMX, not from a stranger
The trade still runs on discretion. CGEMX stands in the middle, so you never have to take anyone at their word.
Checked against its report
Every stone is matched to the report of the laboratory that issued it before it is listed. Enhancement is stated on every listing.
You pay CGEMX
You pay by card, to CGEMX, and you pay the price you see. The seller pays the 3.95% fee and the card fee, and is paid by CGEMX once the sale completes.
See it first
Book a CGEMX inspection: a gemmologist examines it for you, and the fee is credited back if you buy. Or view it yourself at the CGEMX viewing facility, free.
Offers that cost nothing
An offer is a hold on your card for up to seven days. It is charged only if the seller accepts, and released if not.
Verified stores only
Only stores CGEMX has checked, on their company documents and their standing in the trade, can sell. Stars come only from completed sales.
Anonymous on both sides
Neither side sees the other’s name. Ask the seller anything in the chat; contact details are kept out, so the deal stays protected inside CGEMX.
Hold the finest stones, and trade them like assets
After Stock Trade, Vault Trade opens: only the finest untreated stones, certified by GRS, SSEF, Gübelin or AGL, held in insured custody and traded on private offers while the stone never moves. 32 are shown as a preview.











