R. M. Shah Ltd. bringing You the Finest Gemstones since 1961. Three Generations of Gemstone Industry Experience. Ethically Sourced Gemstones from Mine to Market. We export to countries worldwide as well as supplying locally to Dealers, Jewellery manufacturers , Designers and Jewellers throughout the UK. We source our gemstones & Diamonds from legitimate sources from around the world. Our knowledge and reputation allow us to bring our customers the very best gemstones at the most competitive prices.