An Initiative by Serendib Gemstones
Ceylon Gem Identity
CGI
A trusted digital identity for every gemstone — combining provenance documentation, laboratory certification, treatment disclosure, and verifiable sourcing history into one transparent, accessible record.
CGI at a Glance
- CGI stands for Ceylon Gem Identity — a digital provenance initiative by Serendib Gemstones
- Every registered gemstone receives a unique Gem Identity Number (GIN)
- Links laboratory certification (GIA, GRS, Gubelin) to sourcing documentation
- Full treatment disclosure: unheated status or enhancement details recorded permanently
- Chain of custody from Sri Lankan mine to international buyer
- Designed for jewellers, collectors, luxury brands, and institutional investors
- Supports ethical sourcing transparency and ESG compliance requirements
- Verification portal allows instant authentication using the GIN
Foundation
Four Pillars of Trust
CGI is built on four interconnected pillars — each addressing a critical gap in how gemstones are documented, verified, and traded internationally.
Provenance Documentation
Every CGI-registered gemstone carries a documented chain of custody from mine to market — origin region, mining method, and sourcing timeline.
Laboratory Certification
Independent laboratory reports from GIA, GRS, or Gubelin are linked directly to each stone, providing verifiable analysis of species, treatment status, and origin.
Treatment Transparency
Full disclosure of any treatments or enhancements — or confirmation of unheated, natural status — recorded permanently against each gemstone.
Digital Verification
Each gemstone receives a unique Gem Identity Number (GIN) that allows buyers, jewellers, and laboratories to verify its identity and history at any time.
For Every Buyer
Who Benefits from CGI
Jewellers & Trade
Demonstrate verified provenance to end customers, differentiate inventory with documented origin, and reduce return risk.
Collectors & Investors
Permanent digital record of acquisition, treatment status, and certification — strengthening resale value and insurance documentation.
Luxury Brands
Supply chain transparency that meets corporate sustainability requirements and consumer expectations for ethical sourcing.
Laboratories
Linked digital records that complement physical certificates, enabling faster verification and reducing fraud risk.
Learn More
Explore CGI
Building the Future of Gemstone Trust
CGI is currently in active development. We are building the infrastructure, partnerships, and processes needed to deliver a gemstone identity system that meets the highest standards of accuracy, transparency, and reliability.
Early-access registration will be available to select trade partners. If you are a jeweller, dealer, or institution interested in being among the first to use CGI, we would welcome your enquiry.
Register InterestEvery gemstone has a story. CGI makes it verifiable.
From the mines of Ratnapura to jewellers worldwide — CGI bridges centuries of gemstone heritage with the transparency the modern market demands.