Man Made Mineral Simulant (Glass)

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Quartz Druzy on Matrix (with Copper Mineralization)

Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz with Chlorite inclusion

Silicon Dioxide (SiO2) with Chlorite group inclusions

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

Quartz (Smoky/Grey variety)

Silicon Dioxide (SiO2)

Milky Quartz/Clear Quartz Cluster

Silicon Dioxide (SiO2)

Yellow Quartz (Citrinated Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz pebble

Silicon dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)

BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel

Obsidian

Obsidian (Volcanic Glass)

Aventurine

Silicon Dioxide (SiO2 with inclusions of Fuchsite mica)

Quartz with Schist Inclusion

Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sapphire (Raw/Rough)

Corundum (Al2O3)

Milky Quartz with inclusions

Quartz (Silicon Dioxide, SiO2)

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Milky Quartz (with trace inclusions)

Silicon Dioxide (SiO2)

Sandstone (Micaceous)

Clastic Sedimentary Rock (primarily SiO2 with Mica)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Obsidian (in jewelry setting)

Volcanic Glass (Amorphous Silica)

Black Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Obsidian

Volcanic glass (high silica SiO2)

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Obsidian

Obsidian (volcanic glass), predominantly Silicon Dioxide (SiO2)

Quartz Vein in Schist

Quartz (SiO2) in Mica Schist

Quartz with inclusions (likely Tourmaline or Biotite)

Silicon Dioxide (SiO2)

Granite / Quartz Vein Rock

Granitoid with Quartz (SiO2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Quartz (Crystal Point/Fragment)

Silicon Dioxide (SiO2)

Rough Quartz (likely Milky or Smoky Quartz)

Silicon Dioxide (SiO2)

Banded Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Quartz (Smoky/Milky variety with matrix)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Amethyst (Rose-tinted variation)

Silicon Dioxide (SiO2) with trace iron impurities