The Iceberg Diamonds Guide: Mastery & Brilliance

Explore GIA certification, the 4Cs, and gemstone varieties — everything you need to know before making an informed selection.

About GIA

Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls, dedicated to ensuring the public trust in gems and jewelry...
Learn More

The 4Cs

GIA created the 4Cs (an acronym for the four diamond grading factors) and the International Diamond Grading System™...
Learn More

Scroll to Top