For buyers
Certified gemstones. Discreet. Professional.
SOSNA Exchange connects verified buyers with laboratory-certified inventory. Every gemstone passes through Trade Desk. Identities stay protected. Process stays clear.
Gemstones
100% certified
Labs
5+ GIA/SSEF/Gübelin/GRS/AGL
Verification
24–48h
Contact
0 direct with seller
Trade Discount
fixed 25% + up to +10%
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.
Who this is for
Trade buyers, jewelers, wholesalers and approved private clients
Trade buyers
Established gemstone trade professionals sourcing certified material.
Jewelers & ateliers
Jewelry houses and bespoke ateliers requiring lab-verified gemstones.
Wholesalers
Wholesale operators acquiring certified lots with full documentation.
Approved private clients
Verified private clients with confirmed buyer access.
What you can do
Buyer tools on SOSNA Exchange
Browse certified catalog
Explore lab-certified gemstones with structured filters.
Submit buyer requests
Send a structured request to SOSNA Trade Desk for items matching your spec.
Wishlist & saved searches
Keep selected gemstones organized in your private wishlist.
Alerts on new matches
Get notified when new gemstones match your saved searches.
Private offers
Submit private offers mediated by SOSNA Trade Desk.
Reservations & inspection
Request reservations and inspection slots, subject to Trade Desk confirmation.
How to begin
Four steps to an active buyer
Step 01
Register
Create a buyer account in under 2 minutes.
Step 02
Verification
We verify your business profile (Trade / VIP) — typically within 24–48h.
Step 03
Browse & request
Browse the full catalog, save favorites, submit buyer requests.
Step 04
Trade Desk confirms
SOSNA Trade Desk confirms the next step and coordinates the transaction.
Trade Discount
Trade Buyer Advantage
After completed registration and approved Trade Buyer access, a registered Trade Buyer receives a fixed 25% Trade Discount. Based on achieved annual purchase volume, SOSNA Trade Desk may confirm an additional volume-based benefit of up to +10%.
| Annual volume | Base | Volume | Total |
|---|---|---|---|
| Under $50k | 25 % | +0 % | 25 % |
| $50k+ | 25 % | +2 % | 27 % |
| $100k+ | 25 % | +4 % | 29 % |
| $250k+ | 25 % | +6 % | 31 % |
| $500k+ | 25 % | +8 % | 33 % |
| $1M+ | 25 % | +10 % | 35 % |
How SOSNA Exchange protects buyers
Institutional protection on every transaction
Verified gemstones
Every published item is reviewed by SOSNA Trade Desk before going live.
Certificate verification
GIA, SSEF, Gübelin, GRS, AGL or equivalent certificates matched to the item.
Trade Desk mediated
All communication and offers flow through SOSNA Trade Desk.
Identity protection
Buyer and seller identities are never exposed to each other.
Inspection workflow
Structured inspection windows where applicable.
Provenance & audit
Provenance documentation and audit records on every published gemstone.
Frequently asked
Everything you need to know
Get started today
One step from the certified catalog
Create an account, explore the catalog, or apply for Trade / VIP access. SOSNA Trade Desk will guide your next step.
- Free registration, instant activation
- Trade / VIP verification in 24–48 hours
- No hidden fees, no auto-subscriptions