Mineral (Variant Of Quartz)

Quartz (Microcrystalline/Macro crystalline variety)

Silicon Dioxide (SiO2)

Amethyst (Polished/Carved Crystal)

Silicon Dioxide (SiO2) with trace Iron (Fe)

Green Aventurine

Silicon Dioxide (Quartz) with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2)

Gneiss (likely)

Gneiss

Granite

Granite (Felsic intrusive igneous rock)

Amethyst

SiO2 (Silicon Dioxide)

Gneiss

Metamorphic rock of high-grade regional metamorphism

Citrine

Silicon Dioxide (SiO2)

Granite / Gneiss Complex

Felsic Plutonic Rock (Granite) or High-grade Metamorphic Rock (Gneiss)

Yellow Aventurine

Silicon Dioxide (SiO2) with inclusions

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Aquamarine and clear quartz

Aquamarine (Be3Al2Si6O18), Quartz (SiO2)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Rose Quartz

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

Rose Quartz

Silicon Dioxide (SiO2) with trace impurities of Titanium, Manganese, or Iron

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Amethyst

Amethyst (Silicon Dioxide, SiO2 with Iron impurities)

Galena

Lead Sulfide (PbS)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Agate (specifically Botswana or Lake Superior style Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock - Arenite

Sandstone

Arenite

Sandstone

Arenite

Red Sandstone

Arenite (Ferruginous Sandstone)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Sandstone (clastic sedimentary rock, predominantly SiO2)

Tiger's Eye

SiO2 (Quartz with inclusion of iron oxides)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite - Lithium-rich Mica)

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide - SiO2)

Clear/White Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Gold Ore

Auriferous Quartz and Sulfide Mineralization in Host Rock

Sandstone

Arenite

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Geode Nodules / Chalcedony Geode

Silicon Dioxide (SiO2) - Amorphous to Cryptocrystalline Quartz

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Dalmatian Stone (Dalmation Jasper)

Aplite with Arfvedsonite inclusions

Quartzite

Quartzite (SiO2)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Aventurine (Green Aventurine)

Quartz with Fuchsite Inclusions (SiO2)

Chalcedony (Botryoidal Agate vein)

Chalcedony (Microcrystalline Quartz) - SiO2