Analysis & grading

The GIA Diamond Origin Report: Diamond Traceability Based on Science

Consumers now, more than ever, have a heightened awareness of sustainably and ethically sourced products. The GIA Diamond Origin Report uses scientific evaluation to provide confirmation of a diamond’s geographical origin. Origin information for a diamond helps you to distinguish between natural and laboratory-grown diamonds and deliver a strong message on the good mined diamonds do for the country they come from. Proof of a diamond’s origin provides the peace-of-mind a consumer needs before they purchase and you can use this origin information as a way to build trust and credibility with your customers.

Service Components

Diamond Origin Report service includes:

  • A printed report containing GIA’s full, authoritative 4Cs grading assessment, including a plotted diagram of the polished diamond
  • Confirmation of the diamond’s geographical origin, with the country clearly stated on the report
  • Inscription of report number on the diamond’s girdle for added security and identification
  • Enhanced Report Checkfeatures such as full-colour digital images of the diamond in its rough and polished state, as well as an image-rich story of the diamond’s country of origin

View printed GIA Diamond Origin Report sample
View report in Report Check

More Tools to Tell the Story

Retailers have access to supporting materials to help their customers deepen their understanding of and emotional connection with the diamond they purchase. Materials include a colourful book and app that trace a diamond’s journey from formation through discovery and mining, polishing and grading, and describes the beneficial impact of diamonds in a given country. The app also includes report data and images of the rough and polished diamond.

These additional materials are available through the Retailer Support Programme at

Diamond Origin and GIA's Scientific Matching

As the world leader in gemmological research, GIA is uniquely able to utilise over 60 years of scientific knowledge and technology to deliver the rough-to-polish matching confirmation for polished stones. GIA collects data and images for rough analysis. Once GIA receives the polished diamond, GIA uses markers and data identified during the analysis of the rough to scientifically match the polished diamond to its original rough, confirming the diamond’s country of origin.

Connecting the Diamond Supply Chain

GIA’s Diamond Origin Service brings added transparency to the diamond supply chain. By connecting participating miners, manufacturers, wholesalers and retailers, the service ensures that expertly graded natural diamonds whose countries of origin have been scientifically confirmed, reach the end consumer.