Tsarstone collectors guide
Well known laboratory for its expertise in coloured gemstones, especially ruby, sapphire, emerald, jade and rare stones. Also provides identification and grading services for diamonds and jewellery.
Jewelry Trade Center
919/1 Silom Road
N: Laurent Massi
First professional gemological laboratory to be established in Asia in 19978, - The AIGS Gemological Laboratory is a private, independent gemological laboratory, member of the Thai Gem and Jewelry Traders Association (TGJTA), and The International Colored Gemstone Association (ICA).