Tokyo Gem Laboratory are experts in the origin determination and treatment detection of colored gemstones. Our expertise comes from our unique ability to combine knowledge of renowned gemologists with the latest technology available to meticulously inspect your gemstone and determine more than 40 geographical deposits. We pride ourselves on our responsible, ethical and transparent services – three cornerstone values of our company.

Tokyo Gem Laboratory is a gemological reporting authority headquartered in Bangkok, Thailand. It has issued gemological reports on colored gemstones since 1989.