Guaranteed Diamond Transactions
Provider 
Founded —
Sells To Enterprise
Pricing Model Transactional
Ownership —

An automated online trading service for polished diamonds with guaranteed availability, door-to-door delivery, authentication, and secured payment.
Guaranteed Diamond Transactions (GDT) is the IDEX transaction service for polished-diamond trading on the IDEX marketplace. For buyers it guarantees stone availability and door-to-door delivery, so purchases made across listings arrive through one managed channel rather than separate supplier shipments. Authentication of purchased goods against the grading-lab certificate adds an independent quality check before fulfillment.
For sellers the service guarantees payment, and IDEX charges a low fixed transaction fee per deal. The service is presented as fully automated online trading, positioning it as a managed transaction-and-fulfillment layer over the IDEX listing inventory for professional diamond buyers.
| Attribute | Guaranteed Diamond Transactions | White Glove Service | |
|---|---|---|---|
| Provider | |||
| Founded | — | 2017 | |
| Sells To | Enterprise | Enterprise, Small Business | |
| Pricing Model | Transactional | Transactional | |
| Ownership | — | Venture-backed |
Provider 
Founded —
Sells To Enterprise
Pricing Model Transactional
Ownership —
Provider 
Founded 2017
Sells To Enterprise, Small Business
Pricing Model Transactional
Ownership Venture-backed


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B2B diamond and gemstone marketplace for jewelry businesses with managed quality control, consolidated shipping, and invoicing across suppliers.

B2B sourcing platform where jewelry retailers search 1.8 million listed natural diamonds and deal directly with verified sellers.

A diamond market data and analytics platform combining market trends with internal inventory data.

A patented reverse auction platform where competing suppliers bid to fulfill wholesale diamond buying demands.

B2B marketplace where jewelry trade professionals buy, sell, and advertise diamonds, gemstones, and jewelry from global suppliers.
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Daily diamond price indexes, historical price charts, and price benchmarking tools built from online jeweler listings.
