Brian Kosnar Mineral Classics

petrified wood with banded agate (incredibly rare color)

petrified wood with banded agate (incredibly rare color)

rhodochrosite on quartz with sphalerite

afghanite

topaz on albite with muscovite

fluorapatite

fluorite with calcite (gem "ice" crystals)

vanadinite

pyrargyrite with miagyrite

dioptase on calcite

opal-an (hyalite opal) with carbonate-rich fluorapatite (var: staffelite)

fluorite (large bi-color "spinel-twin")

spodumene (var: kunzite) (doubly terminated)

fluorite

cerussite (gemmy “snowflake" twin)

k-feldspar (var: adularia) with chlorite

rhodochrosite with purple apatite

cerussite (rare locality specimen)

smithsonite

polybasite (pseudomorph after acanthite)