Garnet (Almandine/Pyrope variety)
Silicate mineral group; typically Fe3Al2(SiO4)3 (Almandine) or Mg3Al2(SiO4)3 (Pyrope)
mineral
Category
Igneous, Sedimentary, Or Metamorphic (Mineral Based)
Browse igneous, sedimentary, or metamorphic (mineral based) specimens identified by the Rock Identifier community.
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz (Milky/Common)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Citrine (likely Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Conglomerate
Conglomerate (Sedimentary rock)
sedimentary
Pyrite
Pyrite (FeS₂)
Mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
mineral
Mica Schist with Pyrite
Muscovite/Biotite Schist with Iron Sulfide (FeS2)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Wishing Stone (Basalt/Greywacke with Quartz Vein)
Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion
igneous/sedimentary
Laterite
Laterite (no specific mineral formula as it's a rock type)
Sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO₂)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Bauxite
Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
metamorphic
Gneiss
Gneiss
metamorphic
Sandstone
Sandstone (composed primarily of sand-sized minerals or rock grains)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
metamorphic
Gneiss
Gneiss
metamorphic
Peridot (likely, based on color and appearance)
Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)
Mineral
Rainbow Hematite (Man-made/Treated)
Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)
mineral
Limestone (specifically Dolomitic Limestone)
Calcium Magnesium Carbonate (CaMg(CO3)2)
sedimentary
Map Jasper (Picasso Stone)
Metamorphosed Calcium Carbonate (Crystalline Limestone or Marble with Silicate inclusions/impurities)
metamorphic
Biotite (Black Mica)
Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2
mineral
Gold Nugget Jewelry
Native Gold (Au)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral