Colemanite
Sarıkaya B deposit, Kirka, Seyitgazi District, Eskişehir Province, Turkey
13.7 x 8.4 x 8.3 cm. A rare, old locality piece of superb colemanite from this classic locality for the species. A cluster of sparkling, gemmy, intergrown, ivory colored crystals of colemanite, to 2.5 cm on a side, is aesthetically emplaced on matrix. The luster on these crystals is breathtaking and clearly different from California material. Ex. ...
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