Global Gem Exchange
Global Gem Exchange
Global Gem Exchange is three things in one place: a shop for direct purchase of certified stones, a marketplace where vaulted stones trade on offers like a listing, and the custodian vault network that holds the physical stone until someone redeems it.
Average price per carat by stone and carat band, drawn from cleared trades across the vault network. A benchmark to check a listing against — not a fixed price, since no two stones are identical.
| Stone | 1-3 ct / ct | 3-5 ct / ct | 5-10 ct / ct | 24h | Volume | |
|---|---|---|---|---|---|---|
Ruby Mogok, Myanmar |
$340 | $412 | $580 | ▲ 2.1% | $84,200 | View |
Sapphire Kashmir |
$260 | $355 | $470 | ▼ 0.4% | $61,000 | View |
Emerald Muzo, Colombia |
$410 | $610 | $890 | ▲ 1.3% | $102,400 | View |
Paraíba Tourmaline Mozambique |
$3,200 | $8,100 | $14,300 | ▲ 4.7% | $46,900 | View |
Diamond, D-VVS1 GIA certified |
$5,600 | $8,940 | $15,200 | ▲ 0.6% | $210,000 | View |
Vaulted stones, listed individually. Buy now at the seller's price, or make an offer — ownership transfers instantly while the stone stays in custody. Redeem it in person or by delivery whenever you choose.
Everyday certified stones, priced to sell now. No offers, no bidding — pick a stone and check out. Choose vault storage or direct delivery at purchase.
Every stone on the marketplace enters the vault before it enters the market, and stays there until whoever owns it decides to take it out.
Sellers send certified stones to the Bangkok HQ vault or a partner facility for intake and secure storage.
The certificate is cross-checked against the issuing lab's registry and matched to the physical stone before it's listed.
The stone appears on the marketplace with a Buy Now price. Buyers can accept it outright or make an offer — ownership can change hands any number of times while the stone stays put.
Whoever owns it can leave it in custody, collect it in Bangkok, or have it transferred to a partner facility nearby.
Provenance and custody are where gemstone deals usually break down. The exchange is built to remove both risks.
Listings accept reports from GIA, GRS, SSEF, AGL, and other recognized labs, checked against the issuer before going live.
Payment sits in escrow until the stone is verified into vault custody. Sellers are paid on confirmed intake, not on trust.
Every dealer account is reviewed for trade history and business registration before it can deposit, list, or bid.