Mineral, Variety Of Quartz

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz Vein on Matrix

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Iron-stained Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) within a resin matrix

Tiger's Eye (Blue/Black variety, also known as Hawk's Eye)

Silicified Crocidolite (Silicon Dioxide with inclusions, SiO2)

Milky Quartz with Chlorite/Mica inclusions

Silicon Dioxide (SiO2) with inclusions

Yellow Jasper

Silicon Dioxide (SiO2) - variety of Chalcedony

Jasper (Iron-rich Chalcedony)

Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)

Green Fluorite

Calcium Fluoride (CaF2)

Peach Moonstone

Potassium Aluminum Silicate, KAlSi3O8

Ruby (Corundum)

Aluminum Oxide (Al2O3) with Chromium traces

Quartz vein in metamorphic rock

Crystalline Silicon Dioxide (SiO2) in Host Rock

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Vein in Host Rock (Breccia/Rhyolite)

Silicon Dioxide (SiO2) with matrix

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2) with limonite/hematite staining

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Chert (Pink Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert / Flint (a variety of Chert)

Chert (SiO2)

Chert (or Flint)

Silicon dioxide (SiO2)

Chert (Nodule)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Arfvedsonite in Quartz (also known as Eudialyte/Garnet Syenite variety)

Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2] within a silicate matrix

Orthoclase Feldspar (Twinning Specimen)

Orthoclase (KAlSi3O8)

Amethyst

Silicon Dioxide (SiO2 with iron impurities)

Chert

Microcrystalline Quartz (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz Vein in Schist

Quartz (SiO2) in Mica Schist

Red Jasper

Jasper (Silica/Microcrystalline Quartz with Hematite inclusions), SiO2

Jasper (Yellow/Brown variety)

Silicon Dioxide (SiO2) with iron oxide impurities

Black Onyx

Silicon dioxide (SiO2)

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)

Ferruginous Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Gold-bearing Quartz with Pyrite

Quartz (SiO2) with Gold (Au) and Pyrite (FeS2)

Moonstone

Adularia (orthoclase feldspar variety)

Quartzite

Quartzite (primarily SiO2)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)