Syntheticgems.org based in Bangkok, Thailand “Gem Center Of the World”, has been in the gem and jewelry business for more than 35 years. We have our gem cutting factories in China and Thailand, and have been exporting our gems all over the world. Our operation centers span from Thailand, Bahrain, Dubai, India & China. Syntheticgems.org Gems is one of the leading suppliers of CZ Russian Diamonds, Synthetic corundum, Synthetic Spinel, Terbium Glass, Quartz, Hydrothermal, Precious & Semi-Precious Gems of all shapes, sizes, quality and quantities. With International and Local Mine sources of both rough and cut gemstones, we are the most competitive in terms of price and supply.