Gold Mineral
Native Gold (Au)
mineral
Category
Mineral, Jewelry
Browse mineral, jewelry specimens identified by the Rock Identifier community.
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Azurite Malachite
Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)
mineral
Tumbled Quartz
Silicon Dioxide (SiO2)
mineral
Shark Tooth Fossil
Carcharocles megalodon or similar extinct shark tooth
fossil
Tiger's Eye
Silicon Dioxide with Crocidolite (SiO2)
mineral
Green Jasper with Quartz
Microcrystalline Quartz (SiO2)
sedimentary
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
gemstone
Green serpentine (likely serpentinite)
Serpentine-group minerals, commonly antigorite, lizardite, and/or chrysotile; rock name: serpentinite
metamorphic
Chalcedony
Silicon Dioxide (SiO2)
mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Rough red garnet crystal
Likely almandine garnet, Fe₃Al₂(SiO₄)₃; species cannot be confirmed from the image alone
mineral
Blue apatite rough
Apatite-group calcium phosphate, commonly fluorapatite (Ca₅(PO₄)₃F)
mineral
Diamond (in jewelry setting)
Diamond (Carbon, C)
mineral
Polished banded agate (likely laguna-style fortification agate)
Microcrystalline quartz, SiO₂; chalcedony with concentric bands
mineral
Faceted garnet bead necklace
Garnet group, likely almandine (Fe₃Al₂(SiO₄)₃); exact species cannot be confirmed from the image
gemstone
Fossil Shark Tooth
Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth
sedimentary
Faceted clear gemstone in a gold-colored setting
Unidentified transparent faceted stone; possibly quartz, glass, or another colorless gem
gemstone
Turquoise in Matrix
Hydrous phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Diamond (in jewelry)
Carbon (C)
mineral
Diamond (in Jewelry)
Carbon (C)
mineral
Tumbled quartz pebble, likely iron-stained milky quartz
Quartz (SiO₂), possibly with iron-oxide staining
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (containing quartz/agate or zeolite fill)
igneous
Gold coin pendant on a chain
Gold (Au), likely a coin set in a gold-colored metal mount
mineral
Howlite and Purpurite druzy
Calcium Borosilicate Hydroxide (Howlite) and Manganese Phosphate (Purpurite)
mineral
Turquoise beads
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; some beads may be stabilized or dyed
mineral
Tiger's Eye
SiO2 (Quartz pseudomorph after crocidolite)
gemstone
Chrysocolla on Matrix
Hydrated copper silicates ((Cu,Al)2H2Si2O5(OH)4·nH2O)
mineral
Carnelian
SiO2 (Silicon dioxide)
mineral
Snowflake Obsidian
Obsidian with Cristobalite inclusions (SiO2)
igneous
Possible fossilized bone fragment
Indeterminate fossil bone; no species can be identified from this image
fossil
Limonite
Hydrated iron oxide-hydroxide, FeO(OH)·nH2O
mineral
Chrysocolla in Cuprite
(Cu,Al)2H2Si2O5(OH)4 · nH2O (Chrysocolla) and Cu2O (Cuprite)
mineral
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Turquoise beads (likely dyed howlite or magnesite imitation)
Turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O; the pictured beads may instead be dyed Ca-Mg carbonate, which cannot be confirmed visually
mineral
Diamond
Diamond (C)
mineral
Jasper
SiO2 (Cryptocrystalline quartz)
mineral