Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Anthropogenic specimen (Man-made material)
Category
Man Made Object (Ring)
Browse man made object (ring) specimens identified by the Rock Identifier community.
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Carnelian ring
Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)
gemstone
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Pearl
Aragonite (CaCO3 with conchiolin)
mineral
Pearl (Biogenic)
Nacre / Calcium Carbonate (CaCO3)
mineral
Pearl (Biogenic Mineraloid)
Calcium carbonate (Aragonite) and Conchiolin, CaCO3
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Opal ring
Common opal, likely synthetic or assembled blue-green opal (hydrated amorphous silica, SiO₂·nH₂O)
gemstone
Turquoise-colored ring stone (possibly turquoise or imitation)
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; identity cannot be confirmed from the image
gemstone
Diamond (in jewelry setting)
Adamantine Carbon (C)
mineral
Tumbled carnelian
Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)
gemstone
Diamond
Carbon (C)
gemstone
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Polished black stone pendant
Likely black obsidian or black tourmaline; exact identification is uncertain from the photograph
mineral
Likely banded obsidian or dark volcanic glass
Obsidian, predominantly rhyolitic volcanic glass (SiO₂-rich), possibly with devitrified bands and phenocrysts
igneous
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Diamond ring
Diamond, crystalline carbon (C), likely a faceted mounted stone
gemstone
Pearl
Pearl (Calcium Carbonate with organic conchiolin, CaCO3)
mineral
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, formula: SiO2)
sedimentary
Diamond ring
Diamond, crystalline carbon (C), set in a metal ring
gemstone
Smoky quartz ring
Smoky quartz, SiO₂, set in a metal ring; the photo alone cannot confirm whether the stone is natural or treated.
gemstone
Diamond
C (Pure Carbon)
gemstone
Garnet ring
Likely almandine or pyrope garnet, an Fe–Mg–Al silicate in the garnet group; exact identity cannot be confirmed visually
gemstone
Amethyst ring
Amethyst, purple quartz (SiO₂), likely set with diamond or other accent stones
gemstone
Jade Ring
Nephrite or Jadeite
gemstone
Diamond ring
Diamond (crystalline carbon, C)
gemstone
Jade Ring
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
gemstone
Carnelian Ring
SiO2 (Variety of Chalcedony)
gemstone
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Red Agate / Carnelian
Silicon Dioxide (SiO2)
mineral
Natural or Cultured Pearl
Calcium Carbonate (Aragonite and Conchiolin), CaCO3
Mineral (Organic)
Unknown White Specimen
Unidentifiable due to blurriness
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Petrified Wood
Silicified Wood (Permineralized organic tissue)
fossil
Jade Ring
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
gemstone
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Diamond ring
Diamond, crystalline carbon (C), set in a likely precious-metal ring
gemstone
Opal ring
Opal (hydrated amorphous silica, SiO₂·nH₂O)
gemstone
Ruby ring
Corundum (Al₂O₃), red variety colored mainly by chromium
gemstone