Hematite (Tumbled)
Iron(III) oxide (Fe2O3)
Category
Browse igneous or metamorphic (base stone); anthropogenic (decoration) specimens identified by the Rock Identifier community.
Hematite (Tumbled)
Iron(III) oxide (Fe2O3)
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
Chert (and associated Sedimentary rocks)
Microcrystalline Silica (SiO2)
Moss Agate Geode Sphere
Silicon Dioxide (SiO2) - Chalcedony with Chlorite or Manganese inclusions
Rutilated Quartz
Quartz with Rutile inclusions (SiO2 with TiO2 inclusions)
Porphyry
Porphyritic Rhyolite or Andesite
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Smoky Quartz
Smoky Quartz (SiO2 - Silicon Dioxide with trace impurities of aluminum)
Conglomerate
Clastic sedimentary rock (Conglomerate)
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
Conglomerate
Conglomerate (clastic sedimentary rock)
Limestone Breccia
Sedimentary Breccia (Calcareous)
Limestone (specifically Dolomitic/Crystalline Limestone)
Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
Graphite
Graphite (Native Carbon, C)
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Granitic Pegmatite with Biotite
Pegmatitic Granite (contains KAlSi3O8, SiO2, K(Mg,Fe)3AlSi3O10(OH)2)
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
Quartz
Silicon Dioxide (SiO2)
Pink Marble or Rose Quartz (Likely Pink Marble based on carving texture)
Recrystallized Calcite (CaCO3)
Quartz (Iron-stained or Rose variant)
Silicon Dioxide (SiO2)
Magnetite / Iron Ore
Magnetite (Fe3O4)
Blue Apatite
Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
Basalt with Plagioclase Phenocrysts
Porphyritic Basalt
Basalt
Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)
Basalt Pebble
Basalt
Vesicular Basalt
Extrusive mafic igneous rock (primarily Plagioclase Feldspar and Pyroxene)
Basalt
Basalt (composition: Plagioclase, Pyroxene, and Olivine)
Clear Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Tree Agate
Silicon Dioxide (SiO2) with Dendritic Inclusions
Marble
Metamorphosed Limestone (main mineral: Calcite, CaCO3)
Smoky Quartz
Smoky Quartz (SiO2)
Black Sapphire (Basaltic Blue Sapphire)
Corundum (Al2O3)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Sunstone
Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Yellow Quartz (Citrinated Quartz)
Silicon Dioxide (SiO2)
Red Garnet (Pyrope or Almandine)
Garnet Group (A3B2(SiO4)3)
Quartz (Smoky/Grey variety)
Silicon Dioxide (SiO2)