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

Chert (Flint/Chalcedony) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint/Chalcedony)

Silicon Dioxide (SiO2)

sedimentary
Blue Chalcedony (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Blue Chalcedony

Chalcedony (Silicon Dioxide, SiO2)

mineral
Amethyst (Silicon Dioxide (SiO2)) — mineral

Amethyst

Silicon Dioxide (SiO2)

mineral
Chert (Common Opal/Jasper variety) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Common Opal/Jasper variety)

Cryptocrystalline Quartz (SiO2)

sedimentary
Chert (and/or Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (and/or Flint)

Microcrystalline Quartz (SiO2)

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

Petoskey Stone

Hexagonaria percarinata (Fossilized Coral)

sedimentary
Nacre (Mother of Pearl) (Nacre (Biogenic Aragonite/Calcite composite, CaCO3)) — mineral

Nacre (Mother of Pearl)

Nacre (Biogenic Aragonite/Calcite composite, CaCO3)

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

Diamond (in jewelry setting)

Carbon (C)

mineral
Quartz (Smoky Quartz variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

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

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Chert (with nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with nodule)

Microcrystalline Quartz (SiO2)

sedimentary
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous
Sea Shell (Fighting Conch Fragment) (Calcium Carbonate (CaCO3) - Strombus alatus fragment) — sedimentary (biogenic)

Sea Shell (Fighting Conch Fragment)

Calcium Carbonate (CaCO3) - Strombus alatus fragment

sedimentary (biogenic)
Diorite (Intermediate plutonic igneous rock) — igneous

Diorite

Intermediate plutonic igneous rock

igneous
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

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

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

sedimentary (fossilized)
White Marble (Recrystallized Calcite (CaCO3)) — metamorphic

White Marble

Recrystallized Calcite (CaCO3)

metamorphic
Polished carnelian/chalcedony (Carnelian, a reddish-orange variety of microcrystalline quartz (SiO₂)) — mineral

Polished carnelian/chalcedony

Carnelian, a reddish-orange variety of microcrystalline quartz (SiO₂)

mineral
Sunstone Beads (Feldspar group (Oligoclase / Labradorite)) — gemstone

Sunstone Beads

Feldspar group (Oligoclase / Labradorite)

gemstone
Fire Opal (Hydrated amorphous silica (SiO2·nH2O)) — gemstone

Fire Opal

Hydrated amorphous silica (SiO2·nH2O)

gemstone
Opal (Hydrated amorphous silica, SiO2·nH2O) — gemstone

Opal

Hydrated amorphous silica, SiO2·nH2O

gemstone
Dyed Agate (Silicon Dioxide (Chalcedony with artificial colorant), SiO2) — gemstone

Dyed Agate

Silicon Dioxide (Chalcedony with artificial colorant), SiO2

gemstone
Aquamarine (Beryl (Be3Al2(SiO3)6)) — gemstone

Aquamarine

Beryl (Be3Al2(SiO3)6)

gemstone
Tanzanite (Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))) — gemstone

Tanzanite

Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))

gemstone
Emerald (Beryl) (Be₃Al₂Si₆O₁₈ (Chromium/Vanadium-bearing Beryl)) — gemstone

Emerald (Beryl)

Be₃Al₂Si₆O₁₈ (Chromium/Vanadium-bearing Beryl)

gemstone
Aquamarine (Beryl (Be3Al2Si6O18)) — gemstone

Aquamarine

Beryl (Be3Al2Si6O18)

gemstone
Lavender Jadeite (Jadeite ($NaAlSi_2O_6$)) — gemstone

Lavender Jadeite

Jadeite ($NaAlSi_2O_6$)

gemstone
Black Onyx (Tumbled) (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Black Onyx (Tumbled)

Chalcedony (Silicon Dioxide, SiO2)

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

Diamond (Cut Gemstone)

Carbon (C)

gemstone
Moonstone (Orthoclase (KAlSi3O8) or Oligoclase with adularescence) — gemstone

Moonstone

Orthoclase (KAlSi3O8) or Oligoclase with adularescence

gemstone
Amethyst (Amethyst (Silicon Dioxide, SiO2 with Iron impurities)) — gemstone

Amethyst

Amethyst (Silicon Dioxide, SiO2 with Iron impurities)

gemstone
Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

mineral
Black Opal (Kalimaya) (Hydrated Silica (SiO2·nH2O)) — mineraloid

Black Opal (Kalimaya)

Hydrated Silica (SiO2·nH2O)

mineraloid
Amethyst (Silicon Dioxide with iron impurities (SiO2)) — gemstone

Amethyst

Silicon Dioxide with iron impurities (SiO2)

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

Blue Topaz

Al2SiO4(F,OH)2

gemstone
Ruby (Corundum (Al2O3)) — gemstone

Ruby

Corundum (Al2O3)

gemstone
Blue Topaz (Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2]) — gemstone

Blue Topaz

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2]

gemstone
Petoskey Stone (Hexagonaria percarinata) — fossil

Petoskey Stone

Hexagonaria percarinata

fossil
Diamond (or Cubic Zirconia) (Carbon (C) or Zirconium Dioxide (ZrO2)) — gemstone

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

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

Chalcedony (Carnelian)

Silicon Dioxide (SiO2)

mineral
Emerald (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — gemstone

Emerald

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

gemstone