Banded metamorphic rock, likely mica schist or gneiss
Quartz–feldspar–mica schist/gneiss; exact identification requires a fresh surface and mineral tests
metamorphic
Category
Mineral, Often A Rock Given Its Aggregate Nature
Browse mineral, often a rock given its aggregate nature specimens identified by the Rock Identifier community.
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Jasper
Silicon Dioxide (SiO2) microcrystalline quartz
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Granite
Granite (Plutonic Igneous Rock)
igneous
Sandstone (Greywacke)
Arenite / Wacke (Mainly SiO2 with various lithic fragments)
sedimentary
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Sandstone
Clastic Sedimentary Rock
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Dyed Agate
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide impurities
sedimentary (chemical)
Tourmalinated Quartz or Schorl
Silicate mineral, specifically Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4) or dark Tourmaline crystal cluster
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Sandstone and Gravel Aggregate
Clastic Sedimentary Rock / Quartzose Sandstone
sedimentary
Sandstone Pebble / Quartzite Pebble
SiO2 (Silicon Dioxide enriched sedimentary rock)
sedimentary
Pyrite in Matrix (likely Quartz or Coal)
Iron Sulfide (FeS2)
mineral
Basalt with Quartz/Calcite Veining
Basalt (principally Plagioclase and Pyroxene)
igneous
Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)
Calcite
Mineral
Granite with Epidote / Unakite precursor
Plutonic igneous rock composed of Quartz, Feldspar, and Epidote/Chlorite
igneous
Quartz Vein in Host Rock (Gabbro or Basalt)
Silicon Dioxide (SiO2) with Mafic Silicates
metamorphic/igneous
Fluorite (Rainbow Fluorite Tower)
Fluorite (Calcium Fluoride, CaF2)
mineral
Quartz Pebble
Crystalline Silica (SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Sandstone (Quartzite-rich River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Fuchsite (Green Muscovite)
Fuchsite (Chromium-rich Muscovite), K(Al,Cr)2(AlSi3O10)(OH)2
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Fossiliferous Limestone (Coquina / Shell Limestone)
CaCO3 (Calcium Carbonate)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Quartz-veined Basalt
Amygdaloidal or Porphyritic Basalt with Silicon Dioxide (SiO2) vein
igneous
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
sedimentary
Sandstone Pebble
Sandstone (SiO2 rich clastic rock)
sedimentary
Chakra Stone (Composite / Man-made Bonded Gemstones)
Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)
Combined Minerals / Metaphysical stones
Mangano Calcite
Manganocalcite (Ca,Mn)CO3
mineral
Jade (likely Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Mineral
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Sandstone (Green/Yellow Siltstone variant)
Arenite or Siltstone (primarily SiO2 with mineral staining)
sedimentary
Gneiss
Gneiss (pronounced 'nice')
Metamorphic Rock
Green Quartz (Prasiolite/Adventurine/Jasper)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Faceted Citrine
Citrine Quartz (Silicon Dioxide, SiO2)
gemstone