Quartz pebble
Silicon Dioxide (SiO2)
mineral
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Learn about Man Made Glass (Often Grouped With Minerals In Lapidary) in the encyclopedia
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Rainbow Hematite (Man-made/Treated)
Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)
mineral
Serpentine (likely antigorite-rich serpentinite)
Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with dark magnetite/chromite or pyroxene inclusions
metamorphic
Chert (Flint)
Silicon dioxide (SiO2)
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Hematite)
mineral
River Quartzite Slik
Quartzite (SiO2)
metamorphic
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Jasper / Chert (River Stone)
Cryptocrystalline Quartz (SiO2)
sedimentary
Serpentine (Healerite variety)
Serpentine group, Mg3Si2O5(OH)4
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Man-made Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating/dye
mineral
Sandstone
Arenite (specifically sublithic or quartz arenite)
sedimentary
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartzite
Metamorphic Quartz Sandstone
metamorphic
Strawberry Quartz (or Sunstone / Tumbled Quartz)
Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions
mineral
Geode (Unopened)
Quartz Geode (SiO2) / Chalcedony Concretion
mineral
Sand Tiger Shark Tooth (Fossil)
Carcharias taurus (fossilized dentin/enameloid)
fossil
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Chert (Nodule)
Chert (SiO2)
sedimentary
K-Feldspar (Potassium Feldspar / Pink Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Jasper (Iron-rich Chalcedony)
Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)
Sedimentary / Metamorphic
Black Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
igneous
Tumbled pale green aventurine or chalcedony
Quartz-group silica, primarily microcrystalline SiO₂; possible fuchsite-bearing aventurine
mineral
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Serpentine
Serpentine Group (Mg3Si2O5(OH)4)
metamorphic
Polished blue apatite point
Apatite group mineral, commonly fluorapatite (Ca₅(PO₄)₃F)
mineral
Garnet (likely Almandine)
Almandine - Fe3Al2(SiO4)3
mineral
Serpentine (likely serpentinite)
Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly with magnetite and minor brucite
metamorphic
Diorite (River Pebble)
Intermediate Phaneritic Igneous Rock
igneous
Granodiorite
Granodiorite (phaneritic intrusive igneous rock)
igneous
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Tumbled chalcedony (likely milky quartz)
Microcrystalline quartz, SiO₂; possibly pale agate or quartzite
mineral
Quartz Druzy on Matrix (with Copper Mineralization)
Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)
mineral
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled serpentine
Serpentinite; chiefly antigorite, lizardite, and chrysotile Mg₃Si₂O₅(OH)₄
metamorphic
Diamond
Carbon (C)
mineral
White quartz bead bracelet (likely milky quartz)
Quartz, silicon dioxide (SiO₂), usually microcrystalline or cloudy crystalline quartz
mineral
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic