Welcome to Shree Petch & Ploy Co. Ltd, your trusted Bangkok-based source for natural coloured gemstones and cabochons. We offer over 400 varieties sourced directly from gem markets worldwide, catering to designers, wholesalers, and collectors at every level. As proud members of the Thai Gems and Jewelry Traders Association (TGJTA), we are committed to authenticity, quality, and personalised service in every transaction.