Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Category
Synthetic Material (Not A Rock Or Mineral)
Browse synthetic material (not a rock or mineral) specimens identified by the Rock Identifier community.
Learn about Synthetic Material (Not A Rock Or Mineral) in the encyclopedia
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Green Serpentine
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Sandstone
Arenite
sedimentary
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Piddock bored rock (likely Mudstone or Shale)
Ichnofossil (Gastrochaenolites borings) in Fine-grained Sedimentary Rock
sedimentary
Slag
Anthropogenic Vitreous Silica/Iron oxides
mineral-like byproduct
Ferruginous Siltstone or Mudstone
Ferruginous Siltstone / Goethitic Sandstone
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Polished ocean jasper (orbicular jasper)
Microcrystalline quartz/chalcedony (SiO₂) with iron oxides and assorted alteration minerals
mineral
Sandstone (specifically Red Sandstone)
Arenite (primarily Quartz, SiO2)
sedimentary
Sandstone with Iron Staining
Arenite (SiO2 based with Fe2O3 staining)
sedimentary
Granite Cobble
Phaneritic Felsic Igneous Rock
igneous
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (Sandstone)
sedimentary
Chalcedony Agate / Carnelian nodules in Matrix
SiO2 (Silicon Dioxide) with iron oxide inclusions
mineral
Sandstone
Arenite
sedimentary
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
man-made glass
Aquamarine in Onyx / Blue Topaz Pendant
Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)
gemstone
Diamond (Baguette cut)
Carbon (C)
gemstone
Unidentified coarse-grained rock fragments
Likely granite or granitic rock; exact identification is uncertain from the photograph
igneous
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Mica Schist
Mica Schist (Main mineral constituents: Muscovite/Biotite, Quartz, Feldspar)
metamorphic
Sandstone
Arenite (lithic or quartz sandstone)
sedimentary
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Raw greenish-blue quartz-bearing mineral specimen
Likely fluorite or chalcedony/quartz; exact identification requires hardness and crystal tests
mineral
Diamond
Diamond (C)
gemstone
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Weathered granite (likely biotite granite)
Granite; interlocking quartz, feldspar, and mica, commonly with biotite
igneous
Diorite
Intermediate plutonic igneous rock
igneous
Green Opal (Prase Opal)
SiO2 · nH2O (Hydrated Silicon Dioxide)
mineral
Amygdaloidal Basalt with Epidote
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Slate
Slate (Metamorphic Rock)
metamorphic
Sandstone Pebble
Arenite (primarily Quartz, SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Red Sandstone
Ferruginous Sandstone
sedimentary
Iron-rich laterite or limonite/goethite-bearing rock
Hydrated iron oxides, chiefly goethite (α-FeO(OH)) and limonite (FeO(OH)·nH₂O), likely in a lateritic matrix
mineral
Schist
Crystalline Metamorphic Rock (Schistose)
metamorphic
Banded Sandstone
Quartz Arenite (with iron oxide banding)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2) with host rock matrix
mineral
Sandstone (with Iron Staining)
Quartz Arenite / Ferruginous Sandstone
sedimentary