SOSNA Source
Private sourcing for specific certified gemstones.
A discreet, request-based acquisition layer for collectors, jewelers and family offices. Tell us what you're looking for — SOSNA Exchange sources, verifies and proposes within the guarantee layer.
Define your brief
Variety, color, origin, treatment status, weight band, certification preference, budget and timeline.
SOSNA Exchange curates
Our network — sellers, custody partners and trade desk — sources matching certified inventory.
Verified proposals
Each proposal is presented with full certification, custody status and SOSNA Guarantee Layer applied.
Settle and store
Buy outright or place into SOSNA Vault. All transactions settle through SOSNA Gems Investments Inc.