Brian Kosnar Mineral Classics
Ship from USA · 710 items · On Agora since 2026
Showing 561–580 of 710 items
opal (pink and lavender)
epidote
gahnite
quartz "casts" after calcite on matrix
calcite
banded agate
corundum (var: sapphire)
corundum (var: sapphire) (doubly terminated "floater" crystal)
rare copper replacement / pseudomorph after agate (polished pair)
chrysoberyl
chrysoberyl (unique twin)
fluorite
topaz
apatite
proustite on matrix
cuprite on copper-bearing dolomite
fluorite on quartz
smithsonite
anatase (doubly terminated crystals)
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