But, here are some things you do have to worry and avoid when buying gemstones in Thailand and you should keep this in mind when you do decide to buy a gemstone from any wholesaler or retailer.
Thailand is consider the experts in all the new treatments in color stones including heat treatment, synthetics, glass filled rubies, diffused color treatment sapphires, irradiation topaz, dyeing, waxing and oiling emeralds, etc.