Certification Explained

How to read GIA, IGI and NGTC certificates line by line and spot fake papers.

3 articles total

Certification Explained

What Is VVS1 Clarity? Understanding Diamond Clarity Grades

VVS1 is one of the highest clarity grades. Learn what it means, how it compares to VVS2, VS1, and IF, and whether it is ...
Sarah Lin Sep 26, 2026 4 min read
Certification Explained

IGI And NGTC Explained: Lab Diamonds And China National Check

GIA, IGI and NGTC differ why? Why do lab diamonds rely on IGI? This guide reads the IGI and NGTC reports you will actual...
Sarah Lin Sep 12, 2026 5 min read
Certification Explained

How To Read A GIA Certificate

What do all those fields mean? This guide reads the GIA report line by line: cut, color, clarity, carat and the girdle n...
Sarah Lin Aug 21, 2026 5 min read