DIOPTASE (Hydrated Copper Silicate) crystals from Altyn-Tyube, Karagandy, Kazakhstan.

DIOPTASE (Hydrated Copper Silicate) crystals from Altyn-Tyube, Karagandy, Kazakhstan.

DIOPTASE (Hydrated Copper Silicate) crystals from Altyn-Tyube, Karagandy, Kazakhstan.

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Thu, 03 Oct 2019 05:06:23