Sphalerite Zinc Ore Value

2020-5-16Sphalerite The primary ore of zinc and a collectors gem. Sphalerite The primary ore of zinc and a collectors gemSphalerite is a difficult stone to cut and polish It is soft and it has cleavage Weaknesses in the stone or minor accidents during the cutting or polishing process can easily ruin a stone Before deciding to cut a transparent specimen of sphalerite into a gemstone its value as

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