Rose Quartz
Quartz (SiO2) with trace impurities causing pink color
Mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3)(OH)3(OH))
mineral
Amethyst
Silicon dioxide (SiO2) containing traces of iron and manganese
mineral
Seraphinite
Clinochlore (Mg,Fe)5Al(AlSi3O10)(OH)8 - specific variety for Seraphinite due to its fibrous inclusions and chatoyancy.
Mineral
Quartz (on matrix)
Quartz (Silicon Dioxide, SiO₂)
Mineral
Quartz Pebble (Iron-stained)
Silicon Dioxide (SiO2)
Mineral / Sedimentary setting
Gneiss
Gneiss (pronounced 'nice')
Metamorphic Rock
Lava Rock (Basalt)
Basalt (extrusive igneous rock)
igneous
Bull Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Emerald
Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.
Mineral
Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)
Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)
Metamorphic
Chert
Chert (microcrystalline quartz, SiO2)
Sedimentary
Garnet (likely Pyrope or Almandine)
Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.
Mineral
Diamond
Diamond (C)
Mineral
Orthoclase Feldspar (or K-Feldspar)
Orthoclase (KAlSi3O8)
Mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Crystal Quartz Beads (likely Clear Quartz)
Quartz (SiO₂)
Mineral
Clear Quartz (Rock Crystal)
Quartz (SiO₂)
Mineral
Limonite (Iron Ore/Hydrated Iron Oxide)
Limonite (mixture of FeO(OH)·nH₂O minerals, mainly Goethite, FeO(OH) and Lepidocrocite, FeO(OH))
Mineral
Chalcedony or Chert/Jasper with secondary mineral staining
SiO2 (for chalcedony/quartz) with possible secondary copper minerals (e.g., CuSiO3·nH2O for chrysocolla, Cu2(CO3)(OH)2 for malachite) or iron oxides/hydroxides.
Mineral, potentially a rock with chalcedony/jasper.
Druzy Agate (specifically Black Druzy Agate)
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with ferric impurities)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Aventurine
Aventurine Quartz (SiO2 with inclusions)
Mineral
Quartz
Quartz (SiO2)
Mineral
Greenschist (Greenstone)
Greenschist
metamorphic
Jade (likely Nephrite or Jadeite)
Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
Metamorphic rock (for Nephrite and some Jadeite); Mineral (for Jadeite)
Banded Gneiss
Gneiss (pronounced "nice")
metamorphic
Chert
Chert (microcrystalline quartz)
Sedimentary
Laterite
Laterite (no specific mineral formula as it's a rock type)
Sedimentary
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone (Red)
Arenite (primarily Quartz, SiO2, with Iron Oxide cement)
sedimentary
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Jasper (yellow/cream variety)
SiO₂ (Cryptocrystalline Quartz)
Sedimentary
Moss Agate
Silicon Dioxide (SiO2) with inclusions
mineral