Metamorphic Rock (Variety Of Quartz)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

White Marble

Recrystallized Calcite (CaCO3)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Milky Quartz

Silicon dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Tiger's Eye (dark/grey variant)

Pseudomorph of Quartz after Crocidolite (SiO2)

Greenish Metamorphic Rock (likely containing epidote or chlorite)

Metamorphic rock, possibly epidosite or greenstone

Quartzite Pebbler

Quartzite (SiO2)

Eagle Eye / Grey Tiger Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (likely milky quartz or a stained variety)

Silicon Dioxide (SiO₂)

Pyrite

Iron Sulfide (FeS2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Crystalline silica (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (principally SiO2)

Quartzite

Quartzite (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz Vein in Siltstone

Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix

Milky Quartz with inclusions

Quartz (Silicon Dioxide, SiO2)

Rough Ruby

Corundum (Al2O3 with Chromium impurities)

Gneiss

Gneiss (Metamorphic rock)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Schist with Quartz Veins

Schist with Quartz (SiO2)

Quartzite

Metamorphic Quartz (SiO2)

Quartzite

Quartzite (primarily SiO2)

Schist

Mica Schist (Metamorphic Rock)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Ferruginous Quartzite (Iron-stained Quartzite)

Quartzite with Iron oxides (FeO(OH) / Fe2O3)