Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
mineral (refined metal)
Category
Mineral (Native Element)
Browse mineral (native element) specimens identified by the Rock Identifier community.
Learn about Mineral (Native Element) in the encyclopedia
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Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Agate
Chalcedony (SiO2)
Mineral
Pink Cubic Zirconia (CZ)
Zirconium Dioxide (ZrO2)
mineral (synthetic)
Silicon Carbide (Carborundum)
Moissanite (SiC)
mineral
Himalayan Pink Salt
Halite (NaCl)
sedimentary
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Sandstone (Quartz Arenite)
Clastic Sedimentary Rock - Quartz Arenite
sedimentary
Granitic Pegmatite (with Pink Feldspar and Quartz)
Pegmatite (KAlSi3O8 + SiO2)
igneous
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Smoky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Amethyst on Basalt
Silicon dioxide (SiO2) with trace Iron
mineral
Amethyst Geode
Silicon Dioxide (SiO2) - Amethyst variety of Quartz
mineral
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
mineral
Amethyst (as part of a multi-stone bracelet)
Silicon Dioxide (SiO2) with iron impurities
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Onyx (Black Onyx)
Silicon Dioxide (SiO2)
mineral
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Synthetic/Man-made Glass
Granitic Pegmatite with Schorl
Granitic Pegmatite (Schorl: NaFe3Al6(Si6O18)(BO3)3(OH)3OH)
igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Fossilized wood fragment
Petrified wood; commonly silicified fossil wood (SiO₂ replacing organic tissue)
fossil
Granite
Felsic intrusive igneous rock
igneous
Small polished pink-and-white mineral pebble
Likely rose quartz or pale pink quartz; exact identification is uncertain from the image
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst and Hematite Bracelet
Amethyst (SiO2) and Hematite (Fe2O3)
mineral
Pegmatite with Smoky Quartz and Feldspar
Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8)
igneous
Granite Pegmatite
Granitic Pegmatite (composition: SiO2 with KAlSi3O8)
igneous
Petrified Wood
Silicified wood (principally SiO2)
fossil
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
metamorphic
Rose quartz
Quartz (silicon dioxide, SiO₂), pink variety
mineral
Fluorite (Purple Fluorite in Matrix)
Fluorite (Calcium Fluoride, CaF2)
mineral
Serpentinite
Serpentinite (composed largely of Serpentine minerals such as Lizardite, Antigorite, and Chrysotile: Mg3Si2O5(OH)4)
metamorphic
Eudialyte in Matrix
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
mineral
Feldspar-rich Pegmatite
Granitic Pegmatite (principally KAlSi3O8)
igneous
Blue calcite
Calcite (CaCO₃), likely blue calcite with minor matrix minerals
mineral
Tumbled blue calcite
Calcite (CaCO₃), likely blue variety
mineral
Rose quartz (likely)
Quartz, silicon dioxide (SiO₂), pink variety
mineral
Rose quartz
Quartz, silicon dioxide (SiO₂), pink variety
mineral
Quartz with Iron Staining and Chlorite Inclusions
Silicon Dioxide (SiO2)
mineral