mineral classics

goethite

copper pseudomorph after azurite ("copper rose") with malachite

copper (large "spinel"-twin)

copper ("spinel"-twins and crystals)

spinel (ruby spinel) (gem “floater”!)

opal (var: opal-an) / (var: hyalite opal)

opal (var: opal-an) / (var: hyalite opal) (“blood vessel opal”)

tourmaline (fluor-liddicoatite)

beryl (var: aquamarine) with muscovite on albite

prehnite finger cast after anhydrite with calcite

prehnite finger cast after anhydrite

prehnite finger cast after anhydrite

prehnite finger cast after anhydrite

spinel (ruby spinel) ("floater")

bertrandite

calcite

vivianite (doubly terminated)

opal replacing bivalve fossil

opal-an (hyalite opal)

fluorite with calcite (gem "ice" crystals)