Loose Diamonds; Loose Gemstones; Colored Gemstones, Loose; Jewelry: Emerald; Thai Gem Centre is a Reputed Business Establishment Dealing in Emeralds, Sapphires, Rubies. Our Stones have a Variety of Origins; Emeralds Sources from Zambia (Pairs, Single Stones, Calibration); Sapphire Sources from Australia, China, Thailand (Kanchanaburi), Africa; Ruby Sources from Africa, Jewelry Industry, Jewelry Material ...