- We are based in East Africa and sell a variety of Rough gemstones including , Topaz, Ruby , Saphire, Aquamarine, Tanzanites, , Tourmaline, Rhodolites etcSamples can be ordered for verification and analysis,Please get in touch to place an orderRegardsGeorge KamauTel 254 020 216398Cell 254 0722336672NairobiKENYA