Rock Identifier

Category

Mineral, Jewelry

Browse mineral, jewelry specimens identified by the Rock Identifier community.

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Shungite (Shungite (carbon-rich Precambrian rock)) — mineral

Shungite

Shungite (carbon-rich Precambrian rock)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Peridot (Olivine (Mg, Fe)2SiO4) — mineral

Peridot

Olivine (Mg, Fe)2SiO4

Tourmalinated Quartz (Quartz (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) inclusions) — mineral

Tourmalinated Quartz

Quartz (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) inclusions

Tree Agate (Dendritic Agate) (Silicon Dioxide (SiO2) with Manganese/Iron inclusions) — mineral

Tree Agate (Dendritic Agate)

Silicon Dioxide (SiO2) with Manganese/Iron inclusions

Amethyst (Silicon Dioxide (SiO2) with traces of Iron and Manganese) — mineral

Amethyst

Silicon Dioxide (SiO2) with traces of Iron and Manganese

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

Amethyst (Faceted)

Silicon Dioxide (SiO2) with iron impurities

Carnelian Agate (Silicon Dioxide (SiO2) with Iron Oxide impurities) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) with Iron Oxide impurities

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Petrified Wood (Silicified Wood) (Silicified Wood (primarily Chalcedony/Quartz, SiO2)) — mineral

Petrified Wood (Silicified Wood)

Silicified Wood (primarily Chalcedony/Quartz, SiO2)

Green Rutilated Quartz (Silicon Dioxide with Actinolite inclusions (SiO2 + Ca2(Mg,Fe)5Si8O22(OH)2)) — mineral

Green Rutilated Quartz

Silicon Dioxide with Actinolite inclusions (SiO2 + Ca2(Mg,Fe)5Si8O22(OH)2)

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

Amethyst

Amethyst (Silicon Dioxide - SiO2 with iron impurities)

Green Onyx (Banded Calcite) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Green Onyx (Banded Calcite)

Calcite (Calcium Carbonate, CaCO3)

Carnelian (a variety of Chalcedony) (SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz) — mineral

Carnelian (a variety of Chalcedony)

SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz

Emerald (Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Tektite (Indochinite) (Tektite (Natural Glass, SiO2 + Al2O3)) — mineral

Tektite (Indochinite)

Tektite (Natural Glass, SiO2 + Al2O3)

Black Pearl (Tahitian Pearl) (Aragonite / Calcite (CaCO3) with Conchiolin) — mineral

Black Pearl (Tahitian Pearl)

Aragonite / Calcite (CaCO3) with Conchiolin

Banded Agate (Orca Agate) (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Banded Agate (Orca Agate)

Silicon Dioxide (SiO2) - Chalcedony variety

Citrine (likely Heat-Treated) (Quartz (Silicon Dioxide, SiO2)) — mineral

Citrine (likely Heat-Treated)

Quartz (Silicon Dioxide, SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

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

Amethyst

Amethyst (Silicon Dioxide, SiO2 with Iron impurities)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Rose Quartz (SiO2 (Silicon Dioxide)) — mineral

Rose Quartz

SiO2 (Silicon Dioxide)

Gold Flake / Placer Gold (Native Gold (Au)) — mineral

Gold Flake / Placer Gold

Native Gold (Au)

Sunstone (Oligoclase (a variety of Plagioclase Feldspar) - (Na,Ca)(Si,Al)4O8) — mineral

Sunstone

Oligoclase (a variety of Plagioclase Feldspar) - (Na,Ca)(Si,Al)4O8

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

Citrine

Silicon Dioxide (SiO2) with iron impurities

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

Amethyst

Amethyst (Silicon Dioxide with Iron impurities, SiO2)

Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Opal

Hydrated amorphous silica (SiO2·nH2O)

Agate Geode (Microcrystalline Quartz (SiO2)) — mineral

Agate Geode

Microcrystalline Quartz (SiO2)

Amethyst (Raw Quartz) (Silicon Dioxide (SiO2)) — mineral

Amethyst (Raw Quartz)

Silicon Dioxide (SiO2)

Blue Agate (likely Dyed) (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Blue Agate (likely Dyed)

Silicon Dioxide (SiO2) - Chalcedony variety

Banded Agate (Botswana Agate) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Botswana Agate)

Silicon Dioxide (SiO2)

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

Amethyst

Amethyst (Silicon Dioxide with iron impurities), SiO2

Tanzanite (Blue Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))) — mineral

Tanzanite

Blue Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))

Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Opal

Hydrated Silica (SiO2·nH2O)

Aquamarine (Beryl (Be3Al2Si6O18 with Fe2+ impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with Fe2+ impurities)

Agate (specifically Chalcedony nodule) (Silicon Dioxide (SiO2)) — mineral

Agate (specifically Chalcedony nodule)

Silicon Dioxide (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with iron inclusions) — mineral

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

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

Amethyst Quartz

Silicon Dioxide (SiO2 with iron impurities)

Moonstone (Adularia (Potassium Aluminum Silicate, KAlSi3O8)) — mineral

Moonstone

Adularia (Potassium Aluminum Silicate, KAlSi3O8)

Gold Flakes in Oil (Novelty Specimen) (Native Gold (Au)) — mineral

Gold Flakes in Oil (Novelty Specimen)

Native Gold (Au)