Rock Identifier

Category

Mineral, Jewelry

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

Learn about Mineral, Jewelry in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Dolomite

Polished granite slab (Granite, a coarse-grained quartz–feldspar plutonic rock) — igneous

Polished granite slab

Granite, a coarse-grained quartz–feldspar plutonic rock

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Blue-green turquoise (probable) (Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O) — mineral

Blue-green turquoise (probable)

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Fossilized Stingray Mouth Plate (Myliobatidae gen. et sp. indet. (e.g., Myliobatis, Aetobatus)) — fossil

Fossilized Stingray Mouth Plate

Myliobatidae gen. et sp. indet. (e.g., Myliobatis, Aetobatus)

Tumbled carnelian (orange chalcedony) (Carnelian, a microcrystalline variety of quartz (SiO₂)) — mineral

Tumbled carnelian (orange chalcedony)

Carnelian, a microcrystalline variety of quartz (SiO₂)

Diamond (C (Native Carbon)) — mineral

Diamond

C (Native Carbon)

Garnet (Almandine) (Almandine, Fe3Al2Si3O12) — mineral

Garnet (Almandine)

Almandine, Fe3Al2Si3O12

Green fluorite crystal (Fluorite (calcium fluoride, CaF₂)) — mineral

Green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Jasper (Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)

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

Hematite

Iron(III) oxide (Fe2O3)

Turquoise (likely stabilized or simulated Howlite) (CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)) — mineral

Turquoise (likely stabilized or simulated Howlite)

CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)

Turquoise (CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate)) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate)

Amethyst (Quartz (Silicon Dioxide, SiO2)) — gemstone

Amethyst

Quartz (Silicon Dioxide, SiO2)

Fluorite (Fluor-spar) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Fluor-spar)

Calcium Fluoride (CaF2)

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

Agate (Chalcedony)

Silicon Dioxide (SiO2)

Small tan rock fragment (Unidentifiable lithic fragment; mineral composition undetermined) — sedimentary

Small tan rock fragment

Unidentifiable lithic fragment; mineral composition undetermined

Pink-dyed tumbled stone, possibly quartz or agate (Unconfirmed; likely quartz (SiO₂) or microcrystalline quartz (chalcedony, SiO₂), artificially dyed) — mineral

Pink-dyed tumbled stone, possibly quartz or agate

Unconfirmed; likely quartz (SiO₂) or microcrystalline quartz (chalcedony, SiO₂), artificially dyed

Green Aventurine (SiO2) — mineral

Green Aventurine

SiO2

Decorated turquoise-like bead or mineral pendant (Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper) — mineral

Decorated turquoise-like bead or mineral pendant

Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Tiger's Eye (Quartz pseudomorph after crocidolite (SiO2)) — mineral

Tiger's Eye

Quartz pseudomorph after crocidolite (SiO2)

Malachite and Azurite on Gossan (Ironstone Matrix) (Cu2CO3(OH)2 (Malachite) on FeO(OH)·nH2O (Limonite/Gossan)) — mineral

Malachite and Azurite on Gossan (Ironstone Matrix)

Cu2CO3(OH)2 (Malachite) on FeO(OH)·nH2O (Limonite/Gossan)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)

Likely gold-colored metal ring with a possible gemstone (Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting) — mineral

Likely gold-colored metal ring with a possible gemstone

Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting

Lapis Lazuli (Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)

Gold Ore (Lode Gold) (Native Gold (Au) in Matrix) — mineral

Gold Ore (Lode Gold)

Native Gold (Au) in Matrix

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

Fossil tooth, likely shark tooth (Likely fossilized shark tooth (possibly a small lamniform shark; exact taxon cannot be confirmed from the image)) — fossil

Fossil tooth, likely shark tooth

Likely fossilized shark tooth (possibly a small lamniform shark; exact taxon cannot be confirmed from the image)

Yellow Aventurine (Quartz with inclusion minerals (SiO2)) — mineral

Yellow Aventurine

Quartz with inclusion minerals (SiO2)

Tiger's Eye (Quartz (pseudomorph after crocidolite) - SiO2) — mineral

Tiger's Eye

Quartz (pseudomorph after crocidolite) - SiO2

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Chalcedony (Agate/Carnelian variant) (Cryptocrystalline Silica (SiO2)) — mineral

Chalcedony (Agate/Carnelian variant)

Cryptocrystalline Silica (SiO2)

Diamond (or Cubic Zirconia) (C (Carbon) or ZrO2 (Zirconium Dioxide)) — mineral

Diamond (or Cubic Zirconia)

C (Carbon) or ZrO2 (Zirconium Dioxide)

Lapis Lazuli (Lapis Lazuli (Mineral composition: Lazurite, Calcite, Sodalite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite, Calcite, Sodalite, and Pyrite)

Polished yellow jasper or serpentine bead (Jasper: microcrystalline quartz (SiO₂); possible serpentine: Mg₃Si₂O₅(OH)₄) — mineral

Polished yellow jasper or serpentine bead

Jasper: microcrystalline quartz (SiO₂); possible serpentine: Mg₃Si₂O₅(OH)₄

Beaded gemstone bracelets, likely lavender jade/quartz and blue-gray sodalite or dumortierite (Probable jadeite/nephrite or lavender quartz; blue beads may be sodalite (Na8(Al6Si6O24)Cl2) or dumortierite) — mineral

Beaded gemstone bracelets, likely lavender jade/quartz and blue-gray sodalite or dumortierite

Probable jadeite/nephrite or lavender quartz; blue beads may be sodalite (Na8(Al6Si6O24)Cl2) or dumortierite

Quartz crystal (Quartz (Silicon dioxide, SiO2)) — mineral

Quartz crystal

Quartz (Silicon dioxide, SiO2)

Blue Quartz (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Fossilized Shark Tooth (Otodus obliquus) (Otodus obliquus (Mineral: Fluorapatite)) — mineral

Fossilized Shark Tooth (Otodus obliquus)

Otodus obliquus (Mineral: Fluorapatite)

Aventurine (Tan/Cream colored) (Quartz (SiO2) with mineral inclusions) — mineral

Aventurine (Tan/Cream colored)

Quartz (SiO2) with mineral inclusions

Malachite (Copper carbonate hydroxide [Cu2CO3(OH)2]) — mineral

Malachite

Copper carbonate hydroxide [Cu2CO3(OH)2]

Banded Agate (Onyx type) (Silicon Dioxide (SiO2)) — sedimentary

Banded Agate (Onyx type)

Silicon Dioxide (SiO2)