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GRS Gemresearch Thailand

grs lab is well known around the world to support in a friendly way all the dealers that spend ...

mapMarkerGrey Silom, Silom, Bang Rak, Bangko...

Lotus Gemology

We cannot sell gems with Lotus certificates due to lack of recognition. Worthless paper outside...

mapMarkerGrey Lotus Gemology Co. Ltd. Silom ...