Live lab-grown market data
The price-discovery layer
for lab-grown diamonds.
Every supplier's live inventory — normalized and comparable through one API. Lab-grown pricing is fragmented with no trusted index. StoneOS is the aggregation layer that fixes it.
1.50ct Round · F / VS1 — /v1/diamonds/compare
3 suppliers on this spec · best $780 · spread $30 · median $530/ct
- 14
- suppliers, live & normalized
- 4,800+
- listings in one schema
- 1 call
- for best price + spread
- 5%
- flat, shown on every quote
The problem
Lab-grown pricing has no index.
Supply is exploding and prices move weekly, but every supplier publishes a different CSV, API, or spreadsheet — with their own column names, grading quirks, and freshness. Buyers can't see the real market price for a given spec, and there's no benchmark to anchor to. Discovery happens over email and gut feel.
What StoneOS does
- →Ingests every supplier feed and reconciles it into one canonical schema — the 4 Cs, certs, and price, kept fresh.
- →Exposes the whole market through a keyed JSON API and a web terminal — never a public listings page.
- →Answers the real question — best price, spread, and median $/ct for an exact spec — in a single call.
- →Lets you source at a locked price with a transparent fee, routed through a defined order lifecycle.
Why StoneOS is different
Not another marketplace. The aggregation and price-discovery infrastructure the lab-grown market never had.
Lab-grown native
Naturals have a trusted benchmark; lab-grown pricing is volatile and fragmented with none. That gap is exactly where aggregation creates value.
API-first, not a portal
A clean, keyed, metered, tier-gated JSON API with OpenAPI — plus a terminal. Build your own storefront, pricing, and procurement on it.
True price discovery
/v1/diamonds/compare returns best price, spread, and median $/ct for an exact 4C spec across every supplier — a first-class primitive, not a listings board.
Aggregation is the moat
Many messy CSV and API feeds collapse into one canonical schema with reconciliation and freshness. Coverage compounds with every supplier added.
Transparent sourcing
Source through StoneOS at a locked price with an explicit, shown platform fee — routed through a defined order lifecycle, not an opaque trading network.
One feed. One schema.
The whole market.
Developer-first
Price discovery in one request.
Ask for an exact spec and get the answer that matters — who has the best price, how wide the spread is, and where the market sits. Keyed, metered, and documented with OpenAPI.
$ curl https://api.openstoneos.com/v1/diamonds/compare \
-G -d shape=Round -d carat=1.5 -d color=F -d clarity=VS1 \
-H "Authorization: Bearer sk_live_..."
{
"spec": { "shape": "Round", "carat": 1.5, "color": "F", "clarity": "VS1" },
"suppliers": 6,
"best": { "supplierId": "f0..01", "unitPrice": 780.00, "pricePerCarat": 520.00 },
"spread": 30.00,
"medianPricePerCarat": 530.00,
"currency": "USD"
}How it works
Connect
Get an API key, or sign in to the web terminal.
Query
Search aggregated lab-grown inventory by the 4 Cs across all suppliers.
Compare
See best price, spread, and availability for any exact spec.
Source
Route the order through StoneOS at a locked price.
Plans that scale with you
Start free, scale by call volume and seats. A transparent 5% fee applies only when you source an order.
Build on the lab-grown market.
Aggregated supplier inventory and real price discovery — by API or terminal. Start free, no card required.