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

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Opalite

Opalite

Eye Agate

Eye Agate

Map Jasper

Goldstone

Goldstone

Blue Goldstone

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Andalusite

Zincite

Zincite

Bird's Eye Jasper

Phonolite

Phonolite

Marl

Cipollino Marble

Cipollino Marble

Quartzite (Metamorphic Quartzite (primarily SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (primarily SiO2)

metamorphic
Quartzite (Metamorphic Quartzite (primarily SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (primarily SiO2)

metamorphic
Quartz Pebble (Beach Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Beach Chalcedony)

Silicon Dioxide (SiO2)

mineral
Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary
Chalk (Micrite (primarily Calcium Carbonate or CaCO3)) — sedimentary

Chalk

Micrite (primarily Calcium Carbonate or CaCO3)

sedimentary
Diabase (Greenstone) (Diabase (also known as Dolerite)) — igneous

Diabase (Greenstone)

Diabase (also known as Dolerite)

igneous
Chert (specifically Tan/Gray Chert) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (specifically Tan/Gray Chert)

Microcrystalline quartz (SiO2)

sedimentary
Chert (varietal: Flint/Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (varietal: Flint/Jasper)

Silicon Dioxide (SiO2)

sedimentary
Carnelian or Red Agate (Chalcedony (SiO2)) — mineral

Carnelian or Red Agate

Chalcedony (SiO2)

mineral
Tumbled brown chalcedony (likely jasper or agate) (Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining) — mineral

Tumbled brown chalcedony (likely jasper or agate)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining

mineral
Granodiorite (Intrusive Igneous Rock) — igneous

Granodiorite

Intrusive Igneous Rock

igneous
Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

mineral
Granite / Diorite (Granodiorite) (Granodiorite / Quartz Diorite) — igneous

Granite / Diorite (Granodiorite)

Granodiorite / Quartz Diorite

igneous
Rutilated Quartz (Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions) — mineral

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

mineral
Chert (Jasper/Flint variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

sedimentary
Diamond (Diamond (pure carbon C)) — mineral

Diamond

Diamond (pure carbon C)

mineral
Pearl (Calcium Carbonate (CaCO3) - Aragonite/Calcite) — mineral

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite

mineral
Chert or Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Chert or Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Granodiorite / Granite (Weathered) (Granodiorite) — Igneous

Granodiorite / Granite (Weathered)

Granodiorite

Igneous
Peridot (Olivine ((Mg, Fe)2SiO4)) — gemstone

Peridot

Olivine ((Mg, Fe)2SiO4)

gemstone
Bloodstone (Chalcedony (Variety: Bloodstone / Heliotrope), SiO2) — mineral

Bloodstone

Chalcedony (Variety: Bloodstone / Heliotrope), SiO2

mineral
Blue Topaz (Al2SiO4(F,OH)2) — gemstone

Blue Topaz

Al2SiO4(F,OH)2

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

Peridot

Olivine ((Mg, Fe)2SiO4)

gemstone
Coral (Precious Coral) (Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).) — Mineral, Organic Gemstone

Coral (Precious Coral)

Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).

Mineral, Organic Gemstone
Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

mineral
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

sedimentary
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Water-worn Pebbles) (Silicon Dioxide (SiO2)) — mineral

Quartz (Water-worn Pebbles)

Silicon Dioxide (SiO2)

mineral
White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

mineral
Jade Dice (Nephrite / Jadeite (Ca2(Mg,Fe)5Si8O22(OH)2 or NaAlSi2O6)) — gemstone

Jade Dice

Nephrite / Jadeite (Ca2(Mg,Fe)5Si8O22(OH)2 or NaAlSi2O6)

gemstone
Jasper Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper Pebble

Microcrystalline Quartz (SiO2)

sedimentary
Tiger's Eye (Brown/Golden) (Silicon dioxide (Quartz pseudomorph after crocidolite), SiO2) — mineral

Tiger's Eye (Brown/Golden)

Silicon dioxide (Quartz pseudomorph after crocidolite), SiO2

mineral
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

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

Agate

Silicon Dioxide (Chalcedony), SiO2

gemstone
Quartz (Rose Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose Quartz)

Silicon Dioxide (SiO2)

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

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony variety

sedimentary
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Epidote (Epidote (Ca2(Al, Fe)3(SiO4)3(OH))) — mineral

Epidote

Epidote (Ca2(Al, Fe)3(SiO4)3(OH))

mineral
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral
Green Jasper / Green Quartz (Silicon dioxide (SiO2) with mineral impurities) — sedimentary

Green Jasper / Green Quartz

Silicon dioxide (SiO2) with mineral impurities

sedimentary
Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

mineral