Every diamond you can source, live on your site.
Connect your Rapaport, Nivoda, or Polygon account in the Gemtheon dashboard and your storefront fills with certified stones you never have to buy up front — live-priced by your markup rules, verified before every sale.
up to 1 million live diamonds · GIA · IGI certified · No inventory required
up to 1 million stones · GIA · IGI verified
The networks
Three networks. One inventory.
Connect one or all three — Gemtheon merges them into a single deduplicated inventory with one search, one price logic, one look.
Rapaport
FeedThe world's largest diamond trading network, live on your storefront. Rapaport-benchmarked pricing and certificate lookup on every stone.
- 96,000+ stones
- Natural diamonds, all shapes and sizes
- Live Rapaport-benchmarked pricing
Nivoda
FeedThe fast-growing global marketplace — natural and lab-grown side by side, with sharp pricing in the under-one-carat range where bridal volume lives.
- 32,000+ stones
- Natural and lab-grown
- Competitive smaller-carat pricing
Polygon
FeedThe dealer-to-dealer trading network, for merchants who want trade-level sourcing depth behind their retail storefront.
- 14,000+ stones
- Dealer network sourcing
- Trade-level sourcing depth
How it works
From network account to live storefront in three steps.
You bring the memberships you already have. Gemtheon brings the pipe.
Connect your credentials
- Enter your network credentials in the Gemtheon dashboard
- Stored encrypted, used server-side only — never exposed to your storefront
- Connect one network on Pro, or stack all three on Enterprise
Set your pricing rules
- Set markup rules once — Rap + 18%, tiered by carat, whatever your margin logic is
- Rules apply across every connected network consistently
- Change a rule, and every stone reprices instantly
Stones go live
- Certified stones stream into your builder and diamond browser
- Duplicates across networks are merged automatically
- Availability verified the moment a stone is added to a cart
Live pricing
When the market moves, your prices follow.
Diamond prices aren't static, so your storefront shouldn't be either. When a network updates a stone's price, Gemtheon reprices it on your site with your markup rules already applied — no spreadsheets, no overnight imports, no stale quotes. You set the margin logic once; every one of up to 1 million stones obeys it.
- Network price changes flow through automatically
- Your markup rules applied on top — percentages, tiers, or per-shape logic
- The price a shopper sees is the price they check out at
Certification
Every stone arrives with its papers.
GIA and IGI report data rides in with every certified stone — cut, color, clarity, carat, and the report number your shopper can verify. The certificate follows the stone from the browsing table to the cart line to the synced order, so your team and your customer are always looking at the same document.
- GIA and IGI report data on certified stones
- Certificate visible to shoppers before they buy
- Report number attached to the cart line and the synced order
One inventory
Three feeds in. One storefront out.
Gemtheon deduplicates, normalizes, and prices every stone before it reaches your shoppers — they see one inventory, not three suppliers.
Your storefront · up to 1 million stones · one search, one price logic
Feed questions
Straight answers about diamond feeds.
Yes — you connect your own network accounts, so your trade pricing and relationships stay yours. Gemtheon is the pipe from those accounts to your storefront, not a middleman that resells you stones.
Starter includes one supplier feed and up to 3,000 diamonds. Pro connects multiple feeds with up to 50,000 diamonds. Polygon and the full 200,000-diamond ceiling are Enterprise. See the pricing page for the complete breakdown.
Prices update continuously as networks publish changes, with your markup applied automatically. Availability is re-verified at the moment a shopper adds a stone to the cart — so a diamond that just sold elsewhere can't be oversold on your site.
No. This is virtual inventory: you list, the shopper commits, and then you source the stone from the network at your trade terms. Your capital stays in your business instead of your safe.
Show these stones on
Your networks. Your site. Tonight.
Connect a feed, set your markup, and watch certified stones fill your storefront — no inventory bought, no spreadsheets imported.
No inventory required · Live in under 1 hour · Shopify, WooCommerce, Magento, Wix