Send one list
Upload shape, size, color, clarity, lab, quantity, price guidance, and delivery notes in one file.
For jewellers, designers & trade buyers
Send the list. We find the stones.
Tell Siemme what you need: sizes, shapes, qualities, budget, timing. We search quietly, compare options, and return a clear offer without making you hunt stone by stone.
Natural
Lab grown
Melee
Private search
Design requests
For buyers
Stop searching stone by stone.
Most portals give you more filters. Siemme starts with your real need: the stones, the budget, the timing, and the answer you need to give your customer.
We read the need
Messy buyer language becomes a clear sourcing request that can be priced, compared, and followed up.
Receive options
Exact stones, sensible alternatives, delivery notes, and price logic are brought together in one answer.
Confirm with us
Siemme handles hold, checking, invoice, payment terms, shipping, and supplier coordination.
For suppliers
Good stock deserves the right buyer.
Suppliers share stock with Siemme. We bring it into qualified buyer requests without exposing every commercial detail as a public list.
Simple stock sharing
Start with a file upload. Trusted suppliers can later move to scheduled feeds.
Clean trade details
Carat, shape, color, clarity, lab, certificate, measurements, location, availability, price, media, and terms.
Commercially private
Buyer output is a Siemme offer, not a raw supplier spreadsheet. Pricing and priority logic stay private.
How Siemme works
You ask once. We do the comparing.
Send a list, a design note, or a supplier stock file. Siemme turns it into a practical sourcing conversation and a clear next step.
Your requestExcel list / parcel request
Your designCAD, sketch, PDF, indicative dimensions
Supplier stockInventory files and trusted feeds
Siemme reviewCompare · shortlist · price · explain
Your offerQuote · hold · check · invoice · delivery
Buyer desk
Send us what you are trying to source.
CSV lists can show an immediate first pass. Excel, PDF, and text notes are received for Siemme review.
Supplier intake
Share stock with Siemme.
For verified suppliers: upload stock and terms. Siemme reviews it before using it in buyer offers.