Umicore Precious Metals Hua Mak, Bang Kapi, Bangkok 10250, Thailand (66) 2 727 0234 Gems & Jewelry Company
Kevin Nawani 3 - Sukhumvit 4, Khlong Toei, Bangkok 10110, Thailand (66) 87-9044910, (66) 2 655 7643 Gems & Jewelry Company
Pranda Group Bangna Trad Km.14, Bang Chalong, Bang Phli, Samut Prakan 10540, Thailand (66) 2 361 3311,(66) 2 769 9999 Gems & Jewelry Company
Surya Jewellery Maha Phruttharam, Bang Rak, Bangkok 10500, Thailand (66) 2 630 1156 Gems & Jewelry Company
Thai Silp Jewel Maha Phruttharam, Bang Rak, Bangkok 10500, Thailand (66) 2 233 5658-9, (66) 2 237 2095-6, (66) 2 237 2113-4 Gems & Jewelry Company
Rama Jewelry Soi Silom 21, Silom, Bang Rak, Bangkok 10500, Thailand (66) 2 266 8654-7 Gems & Jewelry Company