Synthetic Gems Thanon Song Sawat, Samphanthawong, Bangkok 10100, Thailand (66) 2 225 4565, (66) 2 225 4566, (66) 2 222 5383
Eurostar Ehotbid Thanon Charoen Krung - Charoen Krung 43, Bang Rak, Bangkok 10500, Thailand (66) 2 639 6422