Paul's Lab:
Vanadinite Crystals On Barite
Paul's Lab:
Quartz Crystal
Paul's Lab:
Marcasite crystals on dolomite
Paul's Lab:
Dendritic Silver Crystals
Paul's Lab:
Chrysocolla and Malachite
Paul's Lab:
Bornite Crystal on Calcite
Paul's Lab:
Pyrite Crystals With Hematite
Paul's Lab:
Malachite "Sun" On Chalcedon Stalactites
Paul's Lab:
Dendritic Copper Crystals
Paul's Lab:
Magnetite Crystals
Paul's Lab:
Vanadinite Crystals On Baryte