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Outer Urals
Calcite and Chalcoyprite from Kazakhstan
this specimen has large
The combination of the opal's play-of-color and the picturesque patterns makes Owyhee Blue Opal a sought-after and collectible gemstone
Aragonite with Sulfur from Giumentaro Mine DX3449 obsidian Outer UralsAragonite with Sulfur from Giumentaro Mine Approx. Dimensions: 2x2x2 inches Approx. Weight: 159 grams Locality: Giumentaro Mine, Capodarso, Enna Province, Sicily, Italy This aragonite specimen from the Giumentaro Mine features well formed crystals with a warm, natural luster, and in some pieces, striking associations with native sulfur. The contrast between aragonite and bright yellow sulfur adds visual interest, while the minerals structure gives the
