Gemstones in catalog
—
Catalog value
—
Registered partners
0000
Trade Desk review
Manual review per lot
U.S. Operated
SOSNA Gems Investments Inc.
Lab Verified
GIA · SSEF · Gübelin · GRS · AGL
Insured Custody
Miami · Prague · Dubai (DMCC)
Blockchain Anchored
OpenTimestamps · Daily Merkle Root
Portals
Choose your portal
Featured Collections
Premium certified gemstones
A curated institutional set. Diamonds are intentionally outside SOSNA Exchange's launch scope.
Quick search
Certified gemstones
Search verified gemstones from SOSNA Exchange certified sellers.
Beyond a Marketplace
Verified Infrastructure for Certified Gemstones
SOSNA Exchange is not built as another gemstone marketplace. SOSNA Exchange is a U.S.-based global reserve, vault and verification infrastructure for certified gemstones — connecting verified sellers, trade buyers, private clients and future institutional asset access through one trusted system.
Miami
USA
Prague
European Union
Dubai
DMCC Free Zone
For Buyers
How SOSNA Exchange protects buyers
Buyers receive a verified gemstone, a matched laboratory certificate and institutional settlement — coordinated end-to-end by the SOSNA Trade Desk.
For Sellers
How SOSNA Exchange protects sellers
Sellers operate inside a controlled institutional framework — protected identity, enforced pricing, audited settlement and a permanent reputation ledger.
Discover
Four Pillars of Trust for Global Gemstone Trade
Designed for trade buyers, jewelers, wholesalers, approved private buyers and future institutional asset access — not an investment platform.
Catalog
Premium certified gemstones
A curated institutional set. Diamonds are intentionally outside SOSNA Exchange's launch scope.
DiscoverSOSNA Verify
Public verification
Lookup certificates and custody proof against blockchain-anchored records.
DiscoverSOSNA Vault
Insured custody
Approved vault partners, sealed condition reports, immutable custody history.
Request AccessTrade Desk
Trade Desk
Designed for trade buyers, jewelers, wholesalers, approved private buyers and future institutional asset access — not an investment platform.
Request AccessDashboard
Dashboard
An institutional reserve and vault standard for certified cut gemstones — operated by SOSNA Gems Investments Inc., USA.
Request AccessImmutable Trust Layer
Anchored to public chain
Daily Merkle root anchored via OpenTimestamps — tamper-evident, privacy-safe.
DiscoverInstitutional Access Model
Access to SOSNA Exchange
Registration is free. Higher access levels are approved based on buyer type, trade profile and transaction value.
Open · No Account
Public Access
Public visitors can browse selected certified gemstones, view public prices and request purchase access.
- Public catalog preview
- Full public prices
- No trade discount
- Ability to request access
Free · Verified Email
Registered Access
Free account access for buyers who want saved stones, alerts, requests and a deeper platform experience.
- Free registration
- Wishlist
- Saved searches
- Price alerts
- Private offer requests
- Reservations based on available access level
Approved · Professional Trade
Trade Access
Approved access for jewelers, gemstone dealers, wholesalers and professional trade buyers.
- Approval required
- Trade pricing
- Discounts up to 25%
- B2B requests
- Trade Desk access
- Minimum platform margin protection
Note:Discounts are available only where platform margin protection allows it.
Request Trade AccessPrivate · By Approval
VIP / Private Client Access
Private access for collectors and high-value buyers requiring sourcing, custody, private offers and concierge support.
- Private sourcing
- Private offers
- Concierge support
- SOSNA Vault access
- Individual pricing
- High-value transaction support
SOSNA Exchange is an institutional platform. Higher access levels are not a subscription — they are granted based on buyer profile, trade background and transaction value.
Join SOSNA Exchange
The new standard for global certified gemstone trade.
Sosna Gems Investments Inc. (USA)
Holding Structure — Global Group
SOSNA Exchange is part of the international Sosna Gems Investments Inc. group, headquartered in Florida (USA). Five specialized entities cover asset holding, the investment platform, global gemstone sales, private capital management, and the certified gemstone trading platform.
SOSNA Holding
Principal holding structure
sosnaholding.com
SOSNA Invest
SPV investment platform
sosnainvest.com
SOSNA Gems
Global sales of gemstones, diamonds and investment gold
sosnagems.com
SOSNA Capital Club
Private capital management
sosnacapital.com
SOSNA Exchange
Global platform for certified gemstones
You are here