Man Made Mineral Simulant (Glass)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Quartz Pebble (Sea Glass-like Quartz)

Quartz (Silicon Dioxide - SiO2)

Fluorite (likely Green Fluorite variant)

Calcium Fluoride (CaF2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Feldspar (specifically Orthoclase)

Potassium Aluminum Silicate (KAlSi3O8)

Sandstone (likely Quartzose Sandstone)

Arenite (composed primarily of SiO2)

Quartz (Rose/Pink variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Agate (specifically, multi-colored or pastel-dyed agate)

Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).

Quartz Vein (Iron-stained)

Silicon Dioxide (SiO2) with limonite/hematite staining

Granitic Pegmatite

Pegmatite (composed primarily of Quartz, Feldspar, and Muscovite mica)

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite mica)

Black Obsidian

Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)

Green Aventurine

Aventurine Quartz (SiO2 with inclusions)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Clear Quartz Crystal (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Sandstone

Arenite

Strawberry Quartz and Rose Quartz

Silicon Dioxide (SiO2) with inclusions

Pink Quartz / Rose Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Muscovite Mica (on Quartz Matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2

Quartz Pebble

Quartz (Silicon Dioxide - SiO2)

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Milky Quartz

Silicon Dioxide (SiO2)

Obsidian

Obsidian (Amorphous volcanic glass)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Obsidian

Volcanic Glass (predominantly SiO2)

Obsidian

Volcanic glass