Gneiss
Gneiss (High-grade regional metamorphic rock)
Category
Browse mineral (man made aura treatment) specimens identified by the Rock Identifier community.
Gneiss
Gneiss (High-grade regional metamorphic rock)
Pyrite
Pyrite (FeS2)
Quartz (likely milky quartz or a stained variety)
Silicon Dioxide (SiO₂)
Basalt (Crushed Roadstone)
Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
Chert (or Flint)
Chert (cryptocrystalline quartz), SiO2
Micaceous Rock (likely Muscovite Schist/Gneiss or a Muscovite-rich Specimen)
Predominantly Muscovite (KAl2(AlSi3O10)(F,OH)2), often found in rocks like Muscovite Schist or Muscovite Gneiss.
White Quartz
Quartz (SiO2)
African Turquoise (Jasper)
Polychrome African Jasper (often marketed as 'African Turquoise' due to its color, but it is not true turquoise)
Quartz (beads)
SiO2 (Silicon Dioxide)
Chrysocolla Chalcedony
Hydrated Copper Phyllosilicate (Cu,Al)2H2Si2O5(OH)4 + SiO2
Sandstone
Arenite (general term for sandstone)
Geode (Unopened)
Silica-rich Concretion (primarily SiO2)
Bi-Color Tourmaline (or Watermelon Tourmaline)
Tourmaline (complex borosilicate mineral group with general formula AD3G6(BO3)3T6O18(OH,O)4)
Serpentine Jade (New Jade/Olive Jade)
Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Magnetite with Pyrite or Chalcopyrite inclusions
Magnetite (Fe3O4) with Pyrite (FeS2)
Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)
Quartz (SiO₂)
Serpentine
Serpentine-group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)
Chert (Flint)
Chert (predominantly SiO₂ - silicon dioxide)
Diamond
Diamond (C)
Chalcedony (Banded/Mottled Variety)
Chalcedony (a cryptocrystalline variety of Quartz, SiO2)
Orange Calcite
Calcite (CaCO3)
Feldspathic Granite (likely Syenite or Granite Pegmatite)
Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)
Fluorite
Fluorite (Calcium Fluoride, CaF2)
Quartz
Silicon Dioxide (SiO2)
Aquamarine with Sunstone
Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8
Quartz (River Pebble)
Quartz (SiO₂ - Silicon Dioxide)
Quartz (Crystal/Druzy Quartz)
Quartz (SiO₂)
Quartz
Silicon Dioxide (SiO2)
Schist
Schist (various compositions)
Quartz
Silicon Dioxide (SiO2)
Quartz (likely a weathered/tumbled piece)
Quartz (SiO₂)
Quartz
Silicon dioxide (SiO2)
Jade
There are two distinct minerals classified as Jade: Jadeite (Na(Al,Fe3+)Si2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the image showing translucent, somewhat fibrous material, it is likely Nephrite.
Quartz (River-worn Pebble)
Quartz (SiO2)
Dolomite
Dolomite (CaMg(CO3)2)
Chalcedony Geode
Chalcedony (SiO2) within a geode structure
Serpentine Schist with Quartz Vein
Serpentine Schist (a type of Metamorphic rock). The white band is likely Quartz (SiO2).
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz (Gold-bearing Prospecting Specimen)
Silicon Dioxide (SiO2)
Jasper, possibly Brecciated Jasper or Ocean Jasper due to patterns and color
Silicon Dioxide (SiO2), a variety of Chalcedony
Sandstone
Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)