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.

Learn More

Reports & Services

Diamond - Lab Services

Natural Diamonds

Assessment of authenticity and quality for diamonds in the D-to-Z color range from GIA, creator of the 4Cs. 

Learn More
Colored Diamond - Lab Services

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 More
Reports Laboratory-Grown

Laboratory-Grown Diamonds

Identification of laboratory-grown diamonds, ensuring disclosure through laser inscription and distinctive reports.  
Learn More
GlobalGem_GemEncyclo-Ruby-132x74

Colored Stones

Confirmation of a gemstone’s identity and characteristics through a full gemological examination.

Learn More
GlobalGem GemEncyclo Pearl

Pearls

Documentation of the specific attributes of pearls and pearl jewelry, including mollusk type and growth environment. 
Learn More
A&G Landing Reports Unknown

Unknown

Let GIA gemologists do the detective work to reveal the identity of your material.
Learn More

3 ways to submit a gemstone to gia

FIND A JEWELER

Submit your gemstone through your local jeweler. 

Send to GIA

Ship your gemstone directly to one of our laboratories.

Prepare for Submission
HAND DELIVER

Bring your gemstone to either of our two Hong Kong locations.

Contact Us

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