RG Crystals is a group of companies which is producing and selling lab grown gemstones for jewelry purposes Our company was founded in 1997 and now operates via offices in Bangkok Thailand Hong Kong and Wuzhou Mainland China Additionally we have agent offices dealing in India United Sates and Armenia At present we sell wide range of lab grown and synthetic stones both in rough and finished products Our production facilities are based in Thailand and Armenia RG Crystals offers the most popular materials on the market Colombian and Zambian emeralds produced by Hydrothermal method Ruby Sapphire and Spinel of various colors by Czochralski method Color change Alexandrite Chrysoberyl by Czochralski method Lab grown Opal of different types Unique colors of Cubic Zirconia and sapphires such as bi color and Paraiba