Ruby Jack Sphalerite From Illinois- Collectors Piece, Home Décor, Gift gemstone or sphene (from the Greek

or sphene (from the Greek sphenos (σφηνώ)

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Ruby Jack Sphalerite From Illinois- Collectors Piece, Home Décor, Gift gemstone or sphene (from the GreekRuby Jack Sphalerite From Illinois Collectors Piece, Home Dcor, Gift Weight 235g Size 13. 5cm by 5cm Thickness 2cm This Piece is from an old collection Sphalerite is zinc sulphide and commonly associated with galena in a wide variety of geological settings. Its is popular with mineral collectors for its diverse crystalline form and wide variety of colours. Old mining terms include zinc blende, black jack and ruby jack. Colour is strongly influenced by