Igneous, Sedimentary, Metamorphic, Mineral, Gemstone, Fossil, Or Meteorite

Quartz (Milky/Clear)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Vesicular basalt (pumice-like volcanic stone)

Vesicular basalt; primarily plagioclase, pyroxene, olivine, and volcanic glass

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Peridot (Olivine)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Milky Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Magnetite (Lodestone)

Magnetite (Fe3O4)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Quartz (Small Pebble)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Likely weathered fossil shell or fossiliferous limestone

Indeterminate molluscan fossil, possibly a bivalve or brachiopod preserved in carbonate rock

Milky Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky or Clear fragment)

Silicon Dioxide (SiO2)

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Mica-rich granite or pegmatite fragment

Feldspar–quartz–mica rock, likely biotite granite or granitic pegmatite

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)