Rock Identifier

Category

Mineral (Primary Constituent)

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

Specular Hematite (Hematite (Fe2O3)) — mineral

Specular Hematite

Hematite (Fe2O3)

Quartz Geode (Quartz (Silicon Dioxide, SiO2)) — Mineral

Quartz Geode

Quartz (Silicon Dioxide, SiO2)

Amber (Succinite (Approximate formula: C10H16O)) — mineral

Amber

Succinite (Approximate formula: C10H16O)

Yellow Ochre / Limonite (Limonite (Hydrated Iron(III) Oxide-Hydroxide, FeO(OH)·nH2O)) — mineral

Yellow Ochre / Limonite

Limonite (Hydrated Iron(III) Oxide-Hydroxide, FeO(OH)·nH2O)

White Topaz (Al2SiO4(F,OH)2 (Aluminium Silicate Fluoride Hydroxide)) — mineral

White Topaz

Al2SiO4(F,OH)2 (Aluminium Silicate Fluoride Hydroxide)

Specular Hematite (Specularite (Iron Oxide, Fe2O3)) — mineral

Specular Hematite

Specularite (Iron Oxide, Fe2O3)

Quartz Pebble (River Rock) (Silicon Dioxide (SiO₂)) — Mineral

Quartz Pebble (River Rock)

Silicon Dioxide (SiO₂)

Silver (Native Silver/Alloy Specimen) (Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy) — mineral

Silver (Native Silver/Alloy Specimen)

Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Diamond (in jewelry setting) (Adamantine Carbon (C)) — mineral

Diamond (in jewelry setting)

Adamantine Carbon (C)

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Specular Hematite (Specularite) (Iron Oxide (Fe2O3)) — mineral

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

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

Galena

Lead(II) Sulfide (PbS)

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

Peridot (Gem-quality Olivine)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Limestone (specifically Travertine or Tufa) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (specifically Travertine or Tufa)

Calcium Carbonate (CaCO3)

Chert (Jasper variation) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Yellow Jasper (SiO2 (Silicon Dioxide)) — sedimentary

Yellow Jasper

SiO2 (Silicon Dioxide)

Granite (Granite (Phaneritic Igneous Rock; primarily Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (Phaneritic Igneous Rock; primarily Quartz, Alkali Feldspar, and Plagioclase)

Yellow Sapphire (Corundum (Al2O3)) — mineral

Yellow Sapphire

Corundum (Al2O3)

Hematite Mineral Ore (Iron(III) oxide (Fe2O3)) — mineral

Hematite Mineral Ore

Iron(III) oxide (Fe2O3)

Diamond (or synthetic simulant) (Cubic C (Carbon)) — mineral

Diamond (or synthetic simulant)

Cubic C (Carbon)

Native Copper (Native Copper (Cu)) — mineral

Native Copper

Native Copper (Cu)

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Yellow Diamond (Faceted) (Diamond (pure carbon) with nitrogen impurities, C) — mineral

Yellow Diamond (Faceted)

Diamond (pure carbon) with nitrogen impurities, C

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

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

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Diamond in Gold Setting (Diamond (C - pure carbon)) — mineral

Diamond in Gold Setting

Diamond (C - pure carbon)

Chalcedony Nodule in Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony Nodule in Matrix

Silicon Dioxide (SiO2)

Cinnabar in Quartz (Silicon Dioxide (Quartz, SiO2) with Mercury Sulfide inclusions (Cinnabar, HgS)) — mineral

Cinnabar in Quartz

Silicon Dioxide (Quartz, SiO2) with Mercury Sulfide inclusions (Cinnabar, HgS)

Hematite (Iron(III) oxide (Fe2O3)) — Mineral

Hematite

Iron(III) oxide (Fe2O3)

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

Hematite

Iron(III) oxide (Fe2O3)

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

Hematite

Iron(III) oxide (Fe2O3)

Black Onyx (Silicon Dioxide (SiO2) with cryptocrystalline structure) — mineral

Black Onyx

Silicon Dioxide (SiO2) with cryptocrystalline structure

Amethyst (SiO2 (Silicon Dioxide with Iron impurities and natural radiation influence)) — mineral

Amethyst

SiO2 (Silicon Dioxide with Iron impurities and natural radiation influence)

Specular Hematite (Specularite) (Iron Oxide (Fe2O3)) — mineral

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

Banded Agate (specifically Lake Superior Agate type) (Silicon Dioxide (SiO2) - Microcrystalline Chalcedony) — mineral

Banded Agate (specifically Lake Superior Agate type)

Silicon Dioxide (SiO2) - Microcrystalline Chalcedony