Rock Identifier

Category

Mineral (Primary Constituent)

Browse mineral (primary constituent) specimens identified by the Rock Identifier community.

Pink Granite Porphyry Cobble (Porphyritic K-Feldspar Granite) — igneous

Pink Granite Porphyry Cobble

Porphyritic K-Feldspar Granite

igneous
Basalt with Scoria (Amygdaloidal Basalt / Vesicular Basalt) — igneous

Basalt with Scoria

Amygdaloidal Basalt / Vesicular Basalt

igneous
Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

mineral
Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

mineral
Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

mineral
Yellow Quartz (Citrine Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

mineral
Quartz (Milky or White Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

mineral
Yellow Quartz (Citrine-colored Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine-colored Quartz Pebble)

Silicon Dioxide (SiO2)

mineral
Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Olivine (Peridot) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — mineral

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

mineral
Silicon (Element Si) — mineral

Silicon

Element Si

mineral
Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

mineral
Opalite (Synthetic Silicon Dioxide (SiO2)) — mineral

Opalite

Synthetic Silicon Dioxide (SiO2)

mineral
Magnetite (Iron(II,III) oxide (Fe3O4)) — mineral

Magnetite

Iron(II,III) oxide (Fe3O4)

mineral
Yellow Sapphire (Corundum (Al2O3) with iron impurities) — mineral

Yellow Sapphire

Corundum (Al2O3) with iron impurities

mineral
Hematite (Hematite (Iron(III) oxide, Fe2O3)) — mineral

Hematite

Hematite (Iron(III) oxide, Fe2O3)

mineral
Diamond (or Diamond Simulant) (Carbon (C) - Native Element) — mineral

Diamond (or Diamond Simulant)

Carbon (C) - Native Element

mineral
Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

mineral
Diamond (as set in a metal alloy ring) (Diamond (Pure Carbon, C)) — mineral

Diamond (as set in a metal alloy ring)

Diamond (Pure Carbon, C)

mineral
White Topaz (Topaz [Al2SiO4(F,OH)2]) — mineral

White Topaz

Topaz [Al2SiO4(F,OH)2]

mineral
Amethyst (SiO2 (Silicon Dioxide with iron impurities)) — mineral

Amethyst

SiO2 (Silicon Dioxide with iron impurities)

mineral
Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

mineral
Rough Diamond (Diamond (pure carbon, C)) — mineral

Rough Diamond

Diamond (pure carbon, C)

mineral
White Zircon (Zircon (Zirconium silicate, ZrSiO4)) — mineral

White Zircon

Zircon (Zirconium silicate, ZrSiO4)

mineral
Diamond (as set in a gold ring) (Carbon (C)) — mineral

Diamond (as set in a gold ring)

Carbon (C)

mineral
Magnetite (potentially as a Lodestone or within Ironstone) (Magnetite (Fe3O4)) — mineral

Magnetite (potentially as a Lodestone or within Ironstone)

Magnetite (Fe3O4)

mineral
Amethyst (Geode) (Silicon Dioxide with Iron impurities (SiO2)) — mineral

Amethyst (Geode)

Silicon Dioxide with Iron impurities (SiO2)

mineral
Amethyst and Hematite Bracelet (Amethyst (SiO2) and Hematite (Fe2O3)) — mineral

Amethyst and Hematite Bracelet

Amethyst (SiO2) and Hematite (Fe2O3)

mineral
Diamond (Colorless/White) (Carbon (C)) — mineral

Diamond (Colorless/White)

Carbon (C)

mineral
Ruby (Pinkish-Red) (Corundum (Al2O3 with Chromium trace)) — mineral

Ruby (Pinkish-Red)

Corundum (Al2O3 with Chromium trace)

mineral
Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

mineral
Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

mineral
Agate (Moss or Dendritic Agate) (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Agate (Moss or Dendritic Agate)

Chalcedony (Silicon Dioxide, SiO2)

mineral
Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

mineral
Pink Granite (Granite (Felsic intrusive igneous rock)) — igneous

Pink Granite

Granite (Felsic intrusive igneous rock)

igneous
Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

mineral
Azurite Geode (Azurite (Cu3(CO3)2(OH)2)) — mineral

Azurite Geode

Azurite (Cu3(CO3)2(OH)2)

mineral
Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

mineral
Ruby (Corundum (Al2O3)) — mineral

Ruby

Corundum (Al2O3)

mineral
Botryoidal Hematite (Hematite (Iron(III) oxide, Fe2O3)) — mineral

Botryoidal Hematite

Hematite (Iron(III) oxide, Fe2O3)

mineral
Galena (Lead(II) sulfide (PbS)) — mineral

Galena

Lead(II) sulfide (PbS)

mineral