Petrified Wood
Silicified wood (Quartz/Chalcedony replacement)
fossil
Category
Man Made Object (Ring)
Browse man made object (ring) specimens identified by the Rock Identifier community.
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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
Diamond
Native Carbon (C)
mineral
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
sedimentary
Flint / Chert (Fossiliferous)
Silicon dioxide (SiO2) with microcrystalline quartz
sedimentary
Carnelian
Carnelian (SiO2 with Fe2O3 impurities)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified wood (SiO2 - Silicon Dioxide)
sedimentary
Pumice
Pumice (Vesicular Rhyolite/Andesite)
igneous
Petrified Wood (Silicified Fossil)
Silicified Wood (SiO2)
sedimentary
Crazy Lace Agate
Chalcedony (SiO2)
mineral
Man-made Carved Stone (Scream Mask/Skull motif)
Carved Soapstone or Serpentine-rich rock
Anthropogenic (Man-made artifact)
Dearest Ring (Gemstones)
Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)
mineral
Diamond
Carbon (C)
gemstone
Pearl
Calcium Carbonate (Aragonite/Calcite) with Conchiolin, CaCO3
gemstone
Petrified Wood
Silicified Wood (SiO2)
fossil
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Anthropogenic specimen (Man-made material)
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Amethyst, Aquamarine, and Pearl Ring
SiO2 (Amethyst), Be3Al2Si6O18 (Aquamarine), CaCO3 (Pearl)
gemstone
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Diamond
Carbon (C)
gemstone
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Pearl
Pearl (Calcium Carbonate with organic conchiolin, CaCO3)
mineral
Pearl
Aragonite (CaCO3 with conchiolin)
mineral
Pearl (Biogenic)
Nacre / Calcium Carbonate (CaCO3)
mineral
Pearl (Biogenic Mineraloid)
Calcium carbonate (Aragonite) and Conchiolin, CaCO3
mineral
Chert (with Liesegang Banding)
Microcrystalline quartz (SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz replacement of organic wood structure)
fossil
US Penny
Cuprum (Copper: Cu) and Zincum (Zinc: Zn) Alloy
Man-made object (metal alloy)
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2) microcrystalline quartz
sedimentary
Diamond
C (Pure Carbon)
gemstone
Quartzite with Quartz Vein
SiO2 (Metamorphosed Quartz Sandstone)
metamorphic
Diamond (in jewelry setting)
Adamantine Carbon (C)
mineral
Natural or Cultured Pearl
Calcium Carbonate (Aragonite and Conchiolin), CaCO3
Mineral (Organic)
Jadeite Jade
Jadeite (NaAlSi2O6)
metamorphic
Green Sea Glass
Amorphous Silica (man-made glass), SiO2 + additive metal oxides
mineraloid / anthropogenic (man-made origin)
Petrified Wood
Silicified Wood (primarily quartz/chalcedony replacing organic wood structures, SiO2)
fossil