Man Made Silicate (Anthropogenic Glass)

Synthetic/Amorphous Solid

Borosilicate Glass (Manufactured)

SiO2 + B2O3 (Silicon dioxide and Boron trioxide)

Chert (Jasper variation)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based with quartz grains)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz

SiO2 (Silicon Dioxide)

Clear Quartz

Silicon Dioxide (SiO2)

Basalt with Quartz Veins

Vesicular or aphanitic Basalt with SiO2 (Quartz) intrusions

Igneous

Citrine

Citrine (Silicon Dioxide, SiO2)

Pink Quartz (Rose Quartz)

Silicon Dioxide (SiO2)

Banded Agate

Agate (Silicon Dioxide / SiO2)

Chert / Greenstone

Silicon Dioxide (SiO2) with impurities

Red Cubic Zirconia (Simulated Garnet)

Zirconium Dioxide (ZrO2)

Quartzite (specifically a river-worn pebble)

Quartzite (primarily SiO2)

Peridot

Olivine (Mg, Fe)2SiO4

Fluorite

Calcium Fluoride (CaF2)

Agate (Nodule/Chert)

Silicon Dioxide (SiO2)

Basalt with Peridotite Inclusion

Mafic Volcanic Rock (Extrusive Igneous) with Ultramafic Xenolith

igneous

Lavender Quartz (appearing as beads) and Druzy Quartz

Silicon Dioxide (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz Druzy on Basalt

Silicon Dioxide (SiO2) on Mafic Volcanic Rock

Mineral on Igneous Rock

Rose Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartzite and Jasper Pebbles

Quartzite (re-crystallized Quartz) and Cryptocrystalline Quartz (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz Cluster

Silicon Dioxide (SiO2)

Rose Quartz

SiO2 (Silicon Dioxide)

Quartzite River Rock

Quartzite (Silicon Dioxide, SiO2)

Fluorite (likely Fluorite on Quartz/Matrix)

Calcium Fluoride (CaF2)

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite

Quartzite (SiO2)

Red Quartzite / Ferruginous Quartzite

Quartzite (primarily SiO2 with Fe2O3 inclusions)

Sandstone

Arenite