Diamond Certification Explained
In B2B diamond supply, paper certificates carry significant weight. Diamond certification by independent gemological laboratories verifies that a stone is genuine and accurately graded.
The Industry Standard: GIA
The Gemological Institute of America (GIA) is the global authority. GIA's strict grading standards make it the benchmark for high-value loose natural diamonds.
The International Authority: IGI
The International Gemological Institute (IGI) operates grading centers globally, offering faster turnarounds and comprehensive services for wholesale parcels.
Frequently Asked Questions
What is the main difference between GIA and IGI?
GIA is historically known for strict grading on color and clarity in natural diamonds. IGI is widely recognized as a leading grading authority for lab-grown diamonds and mounted jewelry.
Can laser inscriptions be faked?
While diamond girdles can be laser inscribed with fraudulent numbers, wholesale buyers protect themselves by verifying the stone's physical facet dimensions against the online database registry.