Pegmatite (White Granite variant)
Pegmatitic Granite (Quartz and Feldspar rich)
igneous
Category
Mineral (Native Element)
Browse mineral (native element) specimens identified by the Rock Identifier community.
Rough Gemstone Grains (Mixed Sapphires and Quartz)
Corundum (Al2O3) and Quartz (SiO2)
mineral
Pegmatite
Pegmatitic Granite
igneous
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Granite Pegmatite
Coarse-grained Granite (SiO2 - Aluminum and Alkalies)
igneous
Amphibolite with Hornblende
Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Granitic Pegmatite
Granitic Pegmatite (principally Quartz, Feldspar, and Mica)
igneous
Granitic Pegmatite
Coarse-grained Granite (KAlSi3O8 + SiO2)
igneous
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
mineral
Digital Multimeter (Synthetic Object)
Digital Multimeter (DMM)
not a rock
Green Calcite
Calcite (CaCO3)
mineral
Pink Sapphire
Corundum (Al2O3 with trace Chromium and Iron)
mineral
Sunstone
Oligoclase or Andesine (Plagioclase Feldspar) - (Ca, Na)((Al, Si)2Si2O8)
mineral
Jadeite (Jade)
Jadeite; NaAlSi2O6
metamorphic
Rough Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
White Sapphire
Corundum (Al2O3)
mineral
Fluorite in Matrix
Fluorite (CaF2) within a host rock matrix
Mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Pegmatite (likely Granitic Pegmatite)
Pegmatite (a coarse-grained igneous rock, often with granitic composition)
igneous
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
mineral
Sapphire (Corundum variety)
Sapphire (Al₂O₃)
Mineral
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Emerald
Beryl (variety Emerald), Be3Al2Si6O18 with Cr and/or V
Mineral
Zircon
Zircon (ZrSiO4)
Mineral
Corundum
Corundum (Al2O3)
Mineral
Kunzite
Spodumene (LiAlSi2O6), variety Kunzite
Mineral
Opalite (Man-made Glass)
Fused glass (typically made of dolomite and metal opacifiers)
Man-made Material / Glass
Banded Gneiss
Gneiss (pronounced 'nice')
metamorphic
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz (various varieties)
SiO₂ (Silicon Dioxide)
Mineral
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
Smoky Quartz
Smoky Quartz (SiO2)
Mineral
Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
Mineral
Sapphire (Corundum)
Corundum (Al2O3), variety Sapphire
Mineral
Red Jasper (beads)
Silicon Dioxide (SiO2) with iron inclusions
Sedimentary Rock
Basalt with Weathered Surface
Basalt
Igneous
Garnet (Almandine or Spessartine likely)
Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)
Mineral
Rose Quartz
Quartz (SiO2) with trace impurities causing pink color
Mineral
Calcite (Yellow/Orange variety - sometimes called Honey Calcite)
Calcite
Mineral
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
Mineral
Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)
Chert (microcrystalline quartz)
Metamorphic Rock