Lab Reports & Services
GIA is the world’s most trusted name in diamond grading and gem identification. With objectivity and expertise as its hallmarks, GIA ensures the integrity and accuracy of every report it issues. GIA tests every material submitted to determine whether it is natural or not, and discloses any treatments discovered during our examination.
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Reports & Services
Natural Diamonds
Assessment of authenticity and quality for diamonds in the D-to-Z color range from GIA, creator of the 4Cs.
Natural Colored Diamonds
Assessment of color origin and quality based on GIA’s color grading system for diamonds outside the D-to-Z range.
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Laboratory-Grown Diamonds
Assessment of laboratory-grown diamonds, ensuring disclosure through laser inscription.
Colored Stones
Confirmation of a gemstone’s identity and characteristics through a full gemological examination.
Pearls
Documentation of the specific attributes of pearls and pearl jewelry, including mollusk type and growth environment.
3 ways to submit a gemstone to gia
SEND TO GIA
Ship your gemstone directly to one of our laboratories.
HAND DELIVER
Bring your gemstone to either of our two Hong Kong locations.
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 Contact us
