L e a r n  m o r e  a b o u t  d i a m o n d s  a n d 
G I A  D i a m o n d  G r a d i n g  R e p o r t s

GIA wants you to understand exactly what you're buying when shopping for your diamond. As creators of the 4Cs and the International Diamond Grading System™, GIA set the standards for diamond grading and has been helping consumers make educated diamond buying decisions for over 50 years.

L e a r n  w h y  a  G I A  D i a m o n d  G r a d i n g  R e p o r t  i s  s o  i m p o r t a n t

Most consumer purchases of significant value come with important certified documentation. Houses have deeds. Vehicles have titles and registration. But what about something as important as a diamond?

L e a r n  a b o u t  d i a m o n d s  f r o m G I A , 
t h e  c r e a t o r s  o f  t h e  4 C s  a n d  t h e
I n t e r n a t i o n a l  D i a m o n d  G r a d i n g
S y s t e m

GIA revolutionized the diamond industry in 1955 with its Diamond Grading Report. Based on the 4Cs of diamond value and International Diamond Grading System™, both of which GIA created, the grading report provides a comprehensive analysis of quality and authenticity for diamonds in the D-to-Z color range.

L e a r n  w h y  w e  c a r r y  d i a m o n d s  
g r a d e d  b y  G I A

Established in 1931, GIA is the world's largest and most respected nonprofit institute of gemological research and learning. Because diamonds are so valuable, GIA believes it is essential for industry professionals to have a universal grading system when comparing diamond quality.