Riebeckite black crystal on Quartz

Autunite crystals

Aragonite crystals

Gahnite crystals may be green blue yellow brown or grey

Augite crystal

Cinnabar crystals on Quartz

Stibnite cluster of prismatic crystals

Garnet crystal

Selenite crystalline variety of gypsum

Azurite crystals w Malachite

Sulphur crystal

Aurichalcite crystals med zoom

Topaz crystal

Cassiterite crystal

Ludlamite crystalline crust

Lazulite crystal clusters

zircon crystal 2

Molybdenite crystal on Quartz

sulfur crystal small

Zincite synthetic crystals

Grossular orange Grossular garnet crystals

Amblygonite crystals

Luzonite intergrown crystals

Halite intergrown hopper crystals