Simpsonite is an extremely rare gemstone. The material from Western Australia is bright yellow-orange and very beautiful. The mineral is hard and durable, with no cleavage, and could easily become a popular gemstone if it were more abundant. Gems over 1 carat should be considered extremely rare because clean material is a very small percentage of the limited supply of simpsonite that has been found.
Simpsonite
Information
Data
Value
Name
Simpsonite
Stone Sizes
Crystals have been found up to 5 cm but only tiny stones have been cut from available rough. Ln general, stones are only seen from Brazil and Australia. A typical size is 0.5-1 carat.
Occurrence: In granite pegmatites, usually with biotite.
Bikita, Zimbabwe; Alto do Giz, Ecuador; Kola Peninsula, USSR.
Onca and Paraiba, Brazil: facetable material.
Tabba Tabba. Western Australia: facetable yellowish crystals.
Comments: Simpsonite is an extremely rare gemstone. The material from Western Australia is bright yellow-orange and very beautiful. The mineral is hard and durable, with no cleavage, and could easily become a popular gemstone if it were more abundant. Gems over 1 carat should be considered extremely rare because clean material is a very small percentage of the limited supply of simpsonite that has been found.
Name: After Dr. E. S. Simpson, former government mineralogist of Western Australia.
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