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

Blue chalcedony (likely dyed or polished) (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Blue chalcedony (likely dyed or polished)

Chalcedony, microcrystalline quartz (SiO₂)

Tumbled rutilated quartz bead strand (Quartz, silicon dioxide (SiO₂), containing needle-like rutile inclusions (TiO₂)) — gemstone

Tumbled rutilated quartz bead strand

Quartz, silicon dioxide (SiO₂), containing needle-like rutile inclusions (TiO₂)

Polished ocean jasper (orbicular jasper) (Microcrystalline quartz (SiO₂) with chalcedony, iron oxides, and assorted silicate inclusions) — mineral

Polished ocean jasper (orbicular jasper)

Microcrystalline quartz (SiO₂) with chalcedony, iron oxides, and assorted silicate inclusions

Polished striped jasper pebble (Jasper, microcrystalline quartz (SiO₂) with iron-oxide and clay inclusions) — sedimentary

Polished striped jasper pebble

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

Tumbled tiger’s-eye (Tiger’s-eye quartz, SiO₂ with fibrous crocidolite pseudomorphs) — mineral

Tumbled tiger’s-eye

Tiger’s-eye quartz, SiO₂ with fibrous crocidolite pseudomorphs

Polished dark green stone, likely nephrite jade or serpentine (Nephrite jade: tremolite–actinolite amphibole, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂; possible serpentine: Mg₃Si₂O₅(OH)₄) — metamorphic

Polished dark green stone, likely nephrite jade or serpentine

Nephrite jade: tremolite–actinolite amphibole, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂; possible serpentine: Mg₃Si₂O₅(OH)₄

Red jasper pebble (Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides) — mineral

Red jasper pebble

Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides

Polished tiger’s-eye (Tiger’s-eye, a chatoyant quartz variety; SiO₂ with fibrous pseudomorphic crocidolite/goethite inclusions) — mineral

Polished tiger’s-eye

Tiger’s-eye, a chatoyant quartz variety; SiO₂ with fibrous pseudomorphic crocidolite/goethite inclusions

Tumbled carnelian (likely) (Orange-red chalcedony, microcrystalline quartz (SiO₂)) — mineral

Tumbled carnelian (likely)

Orange-red chalcedony, microcrystalline quartz (SiO₂)

Polished ocean jasper (orbicular jasper), probable (Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral inclusions) — mineral

Polished ocean jasper (orbicular jasper), probable

Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral inclusions

Banded agate (likely carnelian/chalcedony) (Microcrystalline quartz, SiO₂; iron-stained chalcedony) — mineral

Banded agate (likely carnelian/chalcedony)

Microcrystalline quartz, SiO₂; iron-stained chalcedony

Polished agate/jasper pebble (Microcrystalline quartz (chalcedony), SiO₂, with likely iron-oxide and clay inclusions) — mineral

Polished agate/jasper pebble

Microcrystalline quartz (chalcedony), SiO₂, with likely iron-oxide and clay inclusions

Agate (Silicon dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (Chalcedony), SiO2

Agate (Silicon dioxide (Chalcedony), SiO2) — gemstone

Agate

Silicon dioxide (Chalcedony), SiO2

Unakite (Altered Granite (Granitic Metamorphic Rock)) — metamorphic

Unakite

Altered Granite (Granitic Metamorphic Rock)

Polished tourmalinated quartz (Quartz (SiO₂) with black schorl tourmaline (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) inclusions) — mineral

Polished tourmalinated quartz

Quartz (SiO₂) with black schorl tourmaline (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) inclusions

Jasper (Silicon Dioxide (Microcrystalline Quartz), SiO2) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz), SiO2

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Green aventurine (likely) (Quartzite dominated by quartz (SiO₂), colored green by fuchsite mica or chlorite) — mineral

Green aventurine (likely)

Quartzite dominated by quartz (SiO₂), colored green by fuchsite mica or chlorite

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Agate (Silicon Dioxide (SiO2) - Chalcedony variety) — sedimentary

Agate

Silicon Dioxide (SiO2) - Chalcedony variety

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Agate (Silicon dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (Chalcedony), SiO2

Jasper and Chalcedony Nodule (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper and Chalcedony Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Agate (Silicon Dioxide (Chalcedony), SiO2) — mineral

Agate

Silicon Dioxide (Chalcedony), SiO2

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (Microcrystalline Quartz)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Red Jasper (Silicon Dioxide (Quartz variety), SiO2) — mineral

Red Jasper

Silicon Dioxide (Quartz variety), SiO2

Unakite (Altered Granite (Epidote, Pink Orthoclase Feldspar, and Quartz)) — metamorphic

Unakite

Altered Granite (Epidote, Pink Orthoclase Feldspar, and Quartz)

Shiva Lingam Stone (Cryptocrystalline Quartz (Jasper/Basalt matrix)) — sedimentary

Shiva Lingam Stone

Cryptocrystalline Quartz (Jasper/Basalt matrix)

Rhodonite (Inosilicate, (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Inosilicate, (Mn,Fe,Mg,Ca)SiO3

Unakite (Altered granite (Epidote, Orthoclase Feldspar, and Quartz)) — metamorphic

Unakite

Altered granite (Epidote, Orthoclase Feldspar, and Quartz)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Tumbled Gray Agate (Silicon Dioxide (SiO2)) — mineral

Tumbled Gray Agate

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

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

Red Jasper

Silicon Dioxide with Iron Oxide (SiO2)

Malachite (Copper carbonate hydroxide [Cu2CO3(OH)2]) — mineral

Malachite

Copper carbonate hydroxide [Cu2CO3(OH)2]

Banded Calcite (often sold as 'Mexican Onyx') (Calcite (Calcium Carbonate, CaCO3)) — sedimentary

Banded Calcite (often sold as 'Mexican Onyx')

Calcite (Calcium Carbonate, CaCO3)