Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)

Pumice

Pumice (Vesicular Rhyolite/Dacite)

Granite / Quartz Vein Rock

Granitoid with Quartz (SiO2)

Quartz Druzy on Matrix (with Copper Mineralization)

Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Sandstone (Green/Yellow Siltstone variant)

Arenite or Siltstone (primarily SiO2 with mineral staining)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone

Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)

Pumice (specifically a water-worn, weathered variety)

Vesicular volcanic glass

Dumortierite Quartz (Blue Quartz)

Al7(BO3)(SiO4)3O3 / Quarz with Dumortierite inclusions

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Quartz vein in metamorphic rock

Crystalline Silicon Dioxide (SiO2) in Host Rock

Basalt

Basalt

Sandstone

Sandstone (principally SiO2)

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

Sandstone (Ferruginous)

Arenite (Fe-rich)

Rhyolite (Porphyritic)

Rhyolite (Felsic Extrusive Igneous Rock)

Red Garnet

Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)

Quartzite with Chlorite/Epidote

Metamorphosed Quartzite (SiO2)

Granite

Granite

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Granite (Alkali-feldspar Granite)

Felsic Plutonic Rock (Primary minerals: Quartz SiO2, Orthoclase KAlSi3O8, Plagioclase (Na,Ca)AlSi3O8)

Sodalite (blue beads) and Clear Quartz (clear beads)

Sodalite: Na4Al3Si3O12Cl; Quartz: SiO2

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2) with limonite/hematite staining

Basalt

Extrusive mafic igneous rock

Oolitic Chert

Silicon Dioxide (SiO2) with Oolitic texture

Granitic Pegmatite

Granitic Pegmatite with Quartz and Feldspar

Pink Granite

Granite (Alkali-feldspar granite)

Moonstone (specifically Rainbow Moonstone / White Labradorite)

White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)

Quartz

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite (with high iron oxide content)

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8

Sandstone with Manganese Dendrites/Oxide coatings

Arenite with Pyrolusite and Romanechite (MnO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Mixed Gemstone Bracelet

Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2)

Quartz with Limonite Staining

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)

Granodiorite Pebble

Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite/Amphibole)

Fluorite (Rainbow or Multi-colored Fluorite)

Fluorite (Calcium Fluoride - CaF2)