Rock Identifier

Category

Man Made Object (Ring)

Browse man made object (ring) specimens identified by the Rock Identifier community.

Learn about Man Made Object (Ring) in the encyclopedia

Opalite

Eye Agate

Map Jasper

Goldstone

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Zincite

Bird's Eye Jasper

Phonolite

Marl

Cipollino Marble

Cipollino Marble

Carnelian (Chalcedony) (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Carnelian (Chalcedony)

Silicon Dioxide (SiO2) with iron oxide impurities

Sunstone (Feldspar) (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8 with inclusions of Hematite/Goethite) — mineral

Sunstone (Feldspar)

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8 with inclusions of Hematite/Goethite

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Natural Diamond (Faceted) (Diamond (pure carbon crystal, C)) — mineral

Natural Diamond (Faceted)

Diamond (pure carbon crystal, C)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Black Onyx (Silicon Dioxide (SiO2) with parallel banding) — mineral

Black Onyx

Silicon Dioxide (SiO2) with parallel banding

Carnelian Agate (SiO2 (Silicon Dioxide with Iron Oxide impurities)) — mineral

Carnelian Agate

SiO2 (Silicon Dioxide with Iron Oxide impurities)

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

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Quartz Druze (Silicon Dioxide (SiO2)) — mineral

Quartz Druze

Silicon Dioxide (SiO2)

Amethyst (SiO2 (Silicon Dioxide with Iron impurities and irradiation)) — mineral

Amethyst

SiO2 (Silicon Dioxide with Iron impurities and irradiation)

Amethyst (Tumbled) (Amethyst (Silicon Dioxide, SiO2 + Fe4+)) — mineral

Amethyst (Tumbled)

Amethyst (Silicon Dioxide, SiO2 + Fe4+)

Carnelian (Carnelian (SiO2 variant)) — mineral

Carnelian

Carnelian (SiO2 variant)

Leland Blue Stone (Anthropogenic Iron Smelting Slag) — mineraloid

Leland Blue Stone

Anthropogenic Iron Smelting Slag

Diamond (in jewelry) (Carbon (C)) — mineral

Diamond (in jewelry)

Carbon (C)

Diamond (Cut Gemstone) (Carbon (C)) — mineral

Diamond (Cut Gemstone)

Carbon (C)

Yellow Beryl (Heliodor) (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Yellow Beryl (Heliodor)

Beryllium aluminum silicate (Be3Al2Si6O18)

Onyx (Black Onyx) (Silicon Dioxide (SiO2)) — mineral

Onyx (Black Onyx)

Silicon Dioxide (SiO2)

Amethyst (Tumbled) (Crystalline Quartz (SiO2 with iron impurities)) — mineral

Amethyst (Tumbled)

Crystalline Quartz (SiO2 with iron impurities)

Carnelian Agate (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide inclusions

Amazonite (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Black Opal (Hydrated Amorphous Silica (SiO2·nH2O)) — Mineral

Black Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Seraphinite (Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8) — mineral

Seraphinite

Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8

Peridot (Olivine ((Mg, Fe)2SiO4)) — mineral

Peridot

Olivine ((Mg, Fe)2SiO4)

Obsidian (Apache Tear) (Amorphous Volcanic Glass (SiO2)) — igneous

Obsidian (Apache Tear)

Amorphous Volcanic Glass (SiO2)

Dendritic Agate (Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides) — mineral

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides

Diamond (in Jewelry Setting) (Carbon (C) - Isometric-Hexoctahedral) — mineral

Diamond (in Jewelry Setting)

Carbon (C) - Isometric-Hexoctahedral

Green Quartz (Prasiolite/Adventurine/Jasper) (Silicon Dioxide (SiO2)) — mineral

Green Quartz (Prasiolite/Adventurine/Jasper)

Silicon Dioxide (SiO2)

Black Onyx (Onyx (Silicon Dioxide, SiO2)) — mineral

Black Onyx

Onyx (Silicon Dioxide, SiO2)

Petoskey Stone (Hexagonaria percarinata) — sedimentary

Petoskey Stone

Hexagonaria percarinata

Druzzy Quartz on Matrix (Silicon Dioxide (SiO2)) — mineral

Druzzy Quartz on Matrix

Silicon Dioxide (SiO2)

Petoskey Stone (Hexagonaria percarinata (Fossilized Rugose Coral)) — sedimentary

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

Diamond (in jewelry) (Diamond (Carbon, C)) — mineral

Diamond (in jewelry)

Diamond (Carbon, C)

Faceted Peach Morganite (Beryl) (Morganite (Be3Al2Si6O18 with trace Manganese)) — mineral

Faceted Peach Morganite (Beryl)

Morganite (Be3Al2Si6O18 with trace Manganese)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Amethyst (Amethyst (SiO2 - Silicon Dioxide with iron impurities)) — Mineral

Amethyst

Amethyst (SiO2 - Silicon Dioxide with iron impurities)

Tiger's Eye (Silicon dioxide (SiO2) with fibrous inclusions of crocidolite) — Mineral

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite

Likely polished black stone or obsidian (Obsidian (volcanic glass), chiefly SiO₂) — igneous

Likely polished black stone or obsidian

Obsidian (volcanic glass), chiefly SiO₂

Polished black-and-white banded stone, likely tourmalinated quartz or zebra jasper (Quartz (SiO₂) with black tourmaline (schorl, NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄), or quartz-rich zebra jasper) — mineral

Polished black-and-white banded stone, likely tourmalinated quartz or zebra jasper

Quartz (SiO₂) with black tourmaline (schorl, NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄), or quartz-rich zebra jasper

Tumbled carnelian (Carnelian, orange-red chalcedony (microcrystalline quartz, SiO₂)) — gemstone

Tumbled carnelian

Carnelian, orange-red chalcedony (microcrystalline quartz, SiO₂)

Tumbled red jasper (Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions) — mineral

Tumbled red jasper

Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions

Dalmatian jasper (Orbicular rhyolite, commonly sold as Dalmatian jasper; mainly quartz, feldspar, and altered mafic minerals) — igneous

Dalmatian jasper

Orbicular rhyolite, commonly sold as Dalmatian jasper; mainly quartz, feldspar, and altered mafic minerals