IMPERIAL TOPAZ with its distinctive golden-orange color is the rarest and most valuable variety of topaz. This crystal is 1.0 inch in length with a perfect termination on one end. Luster on all faces is vitreous. It has the internal scintillations that make these topaz so unique and pretty, and prized by collectors. A great thumbnail from this world famous locality that has produced some of the most incredible color Topaz crystals in the world. This specimen is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey.