Peridot
Olivine ((Mg,Fe)2SiO4)
gemstone
Category
Mineral, Jewelry
Browse mineral, jewelry specimens identified by the Rock Identifier community.
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Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2
mineral
Jasper and Chalcedony
Silicon Dioxide (SiO2) microcrystalline quartz
sedimentary
Citrine
SiO2 (Silicon Dioxide)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Shattuckite (Blue Quartz/Jasper Matrix)
Shattuckite (Copper Silicate Hydroxide - Cu5(SiO3)4(OH)2)
mineral
Small rough mineral fragment, possibly quartz or feldspar
Unidentified silicate mineral; image is insufficient for a reliable species identification
mineral
Small tan mineral or rock fragment (unidentified)
Indeterminate from the image; no diagnostic features are visible
mineral
Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
gemstone
Blue sodalite (likely)
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
mineral
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Dearest Jewelry (Multigemstone)
Combination of Diamond (C), Emerald (Be3Al2Si6O18), Amethyst/Rock Crystal (SiO2), Ruby (Al2O3), Emerald (Be3Al2Si6O18), Sapphire (Al2O3), and Topaz (Al2SiO4(F,OH)2)
Mineral
Agate and millefiori glass jewelry
Agate: microcrystalline quartz (SiO₂); millefiori element appears to be man-made glass
mineral
Ruby (in jewelry)
Corundum (Al2O3 with Chromium traces)
mineral
Serpentine (rough serpentine-rich rock)
Serpentine-group minerals, chiefly antigorite and/or lizardite; composition broadly Mg₃Si₂O₅(OH)₄
metamorphic
Shark Tooth Fossil
Carcharocles megalodon or similar fossilized elasmobranch tooth
fossil
Yellow-brown stone or mineral fragment
Unidentified; the image does not show enough detail for a reliable identification
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Turquoise-colored bead on a metal earring
Unidentified blue-green bead; possibly turquoise (CuAl₆(PO₄)₄(OH)₈·4H₂O), but the image cannot confirm its material
gemstone
Purple Chalcedony
Silicon Dioxide (SiO2)
mineral
Blue-green mineral specimen, possibly turquoise
Uncertain from the image; turquoise is hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Smoky Quartz Carving
Silicon Dioxide (SiO2)
mineral
Carnelian cabochon earrings
Carnelian, a translucent orange variety of chalcedony (microcrystalline SiO₂)
gemstone
Polished malachite pendant
Malachite, Cu₂CO₃(OH)₂; monoclinic copper carbonate hydroxide
mineral
Chrysocolla and Malachite Beads
Hydrated copper silicates (Chrysocolla) and Copper carbonate hydroxide (Malachite)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Likely amethyst (purple quartz) fragment
Quartz, SiO₂; purple variety colored by trace iron and irradiation
mineral
Quartz Druzy
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Beaded Gemstone Bracelet
Composite Mineral Assemblage
gemstone
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Lapis Lazuli
Complex silicate rock (lazurite, calcite, pyrite)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Garnet (specifically Almandine or Pyrope)
Almandine (Fe3Al2Si3O12) or Pyrope (Mg3Al2Si3O12)
mineral
Agate / Chalcedony Geode
Silicon Dioxide (SiO2)
sedimentary
Possible green glassy mineral pebble
Undetermined; possibly green aventurine (quartz) or another green mineral
mineral
Small brown translucent mineral fragment, possibly quartz
Unidentified; quartz (SiO₂) is a tentative visual match
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral