Aura Quartz Bead
Silicon dioxide (SiO2) with metal coating
mineral with artificial coating
Category
Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)
Browse igneous or metamorphic (base stone); anthropogenic (decoration) specimens identified by the Rock Identifier community.
Learn about Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration) in the encyclopedia
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Sodalite
Na8(Al6Si6O24)Cl2
mineral
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
sedimentary (artificial)
Greenstone
Metabasalt / Chlorite Schist
metamorphic
Labradorite
(Na,Ca)(Al,Si)4O8
mineral
Leland Blue Stone
Anthropogenic Iron Smelting Slag
mineraloid
Petrified Wood
Silicified wood (primarily SiO2)
metamorphic
Slag (Industrial Glass)
Anthropogenic Vitreous Slag (Post-industrial byproduct)
igneous
Muscovite
Muscovite, KAl2(AlSi3O10)(OH)2
mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Serpentine
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe)2O5(OH)4)
metamorphic
Muscovite on Quartz (Mica host rock)
KAl2(AlSi3O10)(OH)2 (Muscovite) in SiO2 (Quartz)
igneous/metamorphic
Mystic Topaz (Treated Quartz or Topaz)
Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating
gemstone
Yellow Quartzite (River Stone)
Quartzite (composed primarily of Quartz: SiO2)
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Greenschist
Greenschist (Chlorite Schist)
metamorphic
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Painted Garden Rock (likely Granite or Limestone base)
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3) based substrate with Acrylic/Enamel pigments
igneous or sedimentary (anthropogenic modification)
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
mineral
Bull Quartz (White Quartz)
Silicon Dioxide (SiO2)
mineral
Biotite (Black Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Basalt (Porphyritic)
Basalt (Mafic Extrusive Igneous Rock)
igneous
River Pebble (Quartzite/Chert)
Quartzite with inclusions (SiO2)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
mineral
Labradorite
(Ca,Na)(Al,Si)4O8 (Plagioclase Feldspar)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Greenstone / Epidosite
Epidosite (primary minerals: Epidote and Quartz)
metamorphic
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Banded Gneiss
Gneiss (Metamorphic rock of variable mineralogy, often quartz-feldspar base)
metamorphic
Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
sedimentary (anthropogenic/technogenic)
Tumbled dark gray stone, likely basalt
Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine
igneous
Chert (specifically a Lithic Flake)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Mica (Muscovite or Biotite)
Sheet silicate mineral group (e.g., KAl2(AlSi3O10)(F,OH)2)
mineral
Blue Quartz (Dumortierite Quartz / Celestite)
Silicon Dioxide (SiO2) with inclusions
mineral
Dark gray stream-worn cobble, likely basalt or andesite
Fine-grained mafic to intermediate volcanic rock; commonly basalt (plagioclase ± pyroxene ± olivine)
igneous
Chert (specifically Jasper/Carnelian Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Brown Sandstone (River Rock)
Arenite
sedimentary