Man Made Mineral Simulant (Glass)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Water-worn pebble)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (with potential inclusion of feldspar)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (specifically Milky/Yellow Quartz)

Silicon Dioxide (SiO2)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Rose or Clear variety)

Silicon Dioxide (SiO2)

Milky Quartz (with Iron Oxide staining)

Silicon Dioxide (SiO2)

Sandstone (with potential iron-oxide staining)

Arenite (primarily SiO2)

Sandstone (with biological crust)

Arenite (SiO2 based)

Quartzite

Quartzite (Primary mineral: SiO2)

Aventurine (Tan/Cream colored)

Quartz (SiO2) with mineral inclusions

River Pebble (Brecciated Chert/Siltstone)

Silicon Dioxide (SiO2) with mineral inclusions

Quartz on Basalt

Silicon Dioxide (SiO2) on Mafic Igneous Rock

Sandstone

Clastic sedimentary rock (primarily SiO2)

Obsidian

Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Obsidian (specifically Silver Sheen Obsidian)

Volcanic Glass (approx. 70–75% SiO2 plus MgO, Fe3O4)

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Sandstone

Arenite

Potassium Feldspar (Orthoclase)

KAlSi3O8

Quartz

Silicon Dioxide (SiO₂)

Amber (and Citrine Quartz)

Succinite (Amber) and Silicon Dioxide (SiO2)

Chert (Flint)

Chert (SiO2)

Granite (Light-colored quartz/feldspar variety)

Granite (composed primarily of Quartz SiO2 and Feldspar KAlSi3O8)

Obsidian

Obsidian (Amorphous volcanic glass)

Sandstone with Quartz Veins

Arenite (primarily SiO2 with Fe2O3 staining)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Blue Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Quartz (River Pebble)

Silicon Dioxide (SiO2)