Gemological Institute of America
The institute's own instrument line, of which the iD100 is a spectroscopic screening device for separating natural diamond from laboratory-grown diamond and simulants.
The record
What it makes
Named as the maker names them on its own site. Specifications and availability change; confirm with the maker before ordering.
Worth knowing
GIA's own wording is that the iD100 returns Pass for natural diamond and Refer for stones needing further testing, so a Refer result is not itself an identification. GIA states its world headquarters is 5345 Armada Drive, Carlsbad, California.
Compiled from store.gia.edu, read on August 16, 2026.
We record what makers publish about themselves. We have not tested this equipment, we take no commission on it, and a listing here is not a recommendation to buy.