Natural Diamonds
Assessment of authenticity and quality for diamonds in the D-to-Z color range from GIA, creator of the 4Cs.
Learn More
Natural Colored Diamonds
Assessment of color origin and quality based on GIA’s color grading system for diamonds outside the D-to-Z range.
Learn MoreLaboratory-Grown Diamonds
Identification of laboratory-grown diamonds, ensuring disclosure through laser inscription and distinctive reports.
Learn More
Colored Stones
Confirmation of a gemstone’s identity and characteristics through a full gemological examination.
Learn More
Pearls
Documentation of the specific attributes of pearls and pearl jewelry, including mollusk type and growth environment.
Learn More
Unknown
Let GIA gemologists do the detective work to reveal the identity of your material.
Learn More3 ways to submit a gemstone to gia
Submit your gemstone through your local jeweler.
SUBMITTING MORE THAN 10 GEMS?
Please contact GIA directly for instructions.
-
GIA Customer Service: +1 800 421 7250 ext 7590 or +1 760 603 4500 ext 7590
