Quartz

Quartz

Silicon Dioxide (SiO2)

Rutilated Quartz

Silicon Dioxide with Titanium Dioxide (SiO2 with TiO2 inclusions)

Rose Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz with Mineral Inclusions

Quartz (Silicon Dioxide, SiO2)

Quartz (Clear / Rock Crystal)

Silicon Dioxide (SiO2)

Granite

Granite

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Rose Quartz with Oxide Inclusions

Silicon Dioxide (SiO2)

Quartz with Muscovite Mica

SiO2 with KAl2(AlSi3O10)(OH)2

Basalt with Quartz Vein

Basalt (fine-grained mafic igneous rock) with crystalline Quartz (SiO2)

Smoky Quartz and Clear Quartz Geode

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz Vein in Schist

Quartz (SiO2) in Mica Schist

White Quartz

Quartz (SiO2)

Veined Quartz

SiO2 (Silicon Dioxide)

Quartzite

Quartzite (composed primarily of Quartz, SiO2)

Quartzite Pebble

Quartzite (SiO2)

Quartzite

Quartzite (mostly SiO2)

Quartzite Pebble

Quartzite (SiO2)

Citrine

SiO2 (Silicon Dioxide)

Quartzite

Quartzite (primarily SiO2)

Citrine Quartz

Crystalline Quartz (SiO2 with iron impurities)

Quartzite

Quartzite (composed primarily of Silicon Dioxide, SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Metamorphic Quartz (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite with Quartz Vein

Metamorphosed sandstone (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (principally SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (High-purity SiO2)

Quartzite

Metamorphosed Quartz Sandstone