Hans Engelbrecht

Smithsonite from Namibia, Oshikoto Region, Tsumeb, Tsumeb Mine image

Smithsonite from Namibia, Oshikoto Region, Tsumeb, Tsumeb Mine

3

Amethyst from Slovakia, Banská Bystrica Region, Banská Štiavnica image

Amethyst from Slovakia, Banská Bystrica Region, Banská Štiavnica

5

Chalcopyrite from Slovakia, Banská Bystrica Region, Banská Štiavnica image

Chalcopyrite from Slovakia, Banská Bystrica Region, Banská Štiavnica

5