Citrine
Silicon dioxide (SiO2)
mineral
Category
Igneous Or Metamorphic
Browse igneous or metamorphic specimens identified by the Rock Identifier community.
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Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Raw quartz crystal/chunk
Quartz (silicon dioxide, SiO₂)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Quartz (SiO2)
Mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Moonstone with Black Tourmaline
Feldspar (KAlSi3O8) with inclusions of Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Quartz Sand Gravel
Silicon Dioxide (SiO2)
sedimentary
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Hypersthene
Enstatite (Hypersthene variety), (Mg,Fe)SiO3
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Smoky Quartz (Faceted)
Silicon Dioxide (SiO2)
gemstone
Rounded pinkish quartz-rich pebble
Likely quartzite or fine-grained granite/granitoid; exact identification is uncertain from the image
igneous
Blue Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Moonstone
Adularia / Orthoclase (KAlSi3O8)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Quartz (Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz-rich river pebble (likely milky quartz or quartzite)
Quartz, SiO₂; possibly quartzite, a metamorphic rock dominated by quartz
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2 with Iron impurities)
mineral
Quartz pebble
Quartz (SiO2)
sedimentary
Likely quartz cluster with iron staining
Quartz (SiO₂), possibly with calcite or feldspar inclusions
mineral
Strawberry Quartz
Quartz with Hematite or Goethite inclusions (SiO2 + inclusions)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
SiO2 (Quartz with Fuchsite inclusions)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral