Why MarbleMap
7 privacy rules — never broken
Every MarbleMap feature is built on these seven rules. Sealed-bid fairness is not a feature — it is the system's structural integrity contract: a competing offer, the offer count, or a buyer's notes never leak to the supplier side.
Buyer identity is visible
The supplier knows who they are quoting — the identity of the buyer who opened the request is transparent.
Buyer isolation
A buyer cannot see other buyers, their requests, or how many offers they have received.
Request-scoped communication
Conversation happens only in the chat tied to the relevant request; there is no free-form off-platform messaging.
Sealed-bid offers
The supplier cannot see competing offers or the offer count. No one can find out "what the lowest is."
Comparison stays with the buyer
Only the buyer sees all incoming offers in full and compares them side by side.
The system suggests, the buyer decides
The auto-flag highlights the best-fit offer; it does not decide automatically — the final choice is the buyer's.
Bilingual (DeepL)
Request, chat, and offer text are translated into the user's language; original and translation together.
Know who you're doing business with
Verified Supplier (KYB)
The "Verified Supplier" badge cannot be bought and a company cannot grant it to itself — it is derived solely from identity credentials (tax number, registration document). Every company entering the marketplace passes through an approval gate.
- KYB based on tax number + registration document
- The badge cannot be self-granted
- Approval gate = marketplace quality
Double-blind reviews & reputation
Reviews can only be left by parties who have actually done business together (with a completed order); they are double-blind and revealed simultaneously. Fake reviews cannot circulate, and there is no retaliation.
- Transaction-gated
- Double-blind + simultaneous reveal
- Sealed-bid-safe reputation
Let your next stone deal start fair.
