Robert Sielecki

Azurite with Malachite

Azurite

Azurite

Carrollite

Celestine with Sulfur inclusions

Chalcopyrite, Quartz

Cerussite, Smithsonite

Anglesite

Tanzanite (Zoisite)

Rhodonite, Galena

Smoky Quartz

Vanadinite (Arsenic-rich)

Mimetite

Hematite

Alabandite

Johannsenite, Hedenbergite

Bustamite

Gold

Iodargyrite

Atacamite

Smoky Quartz

Rhodonite, bannisterite, Calcite

Diamond

Gold with Calcite

Whewellite

Scheelite, Quartz

Legrandite

Barite

Betekhtinite

Azurite, Malachite

Amethyst (cactus Quartz)

Betafite

Scholzite

Helvite, Sphalerite

Copper

Rhodochrosite, Quartz

Cassiterite

Pyrite on Manganese-rich Calcite

Azurite

Copper

Gold

Cerussite

Dyscrasite

Sieleckiite, Libethenite, Variscite

Pyromorphite

Smoky Quartz

Pseudomalachite, Chrysocolla