Rock Identifier

Category

Non Geological

Browse non geological specimens identified by the Rock Identifier community.

Learn about Non Geological in the encyclopedia

Common Opal

Mudstone

Green Beryl

Matte Obsidian

Sapphire

Hornfels

Argillite

Mint Opal

Plazolite

Bixbite

Quartzite (Metamorphic Quartzite) — metamorphic

Quartzite

Metamorphic Quartzite

Quartzite (Orthoquartzite) (SiO2 (Silicon Dioxide) with Iron Oxide inclusions) — metamorphic

Quartzite (Orthoquartzite)

SiO2 (Silicon Dioxide) with Iron Oxide inclusions

Obsidian (Volcanic Glass (SiO2 dominant)) — igneous

Obsidian

Volcanic Glass (SiO2 dominant)

Synthetic Resin Charm (Seal Shape) (Polymer Resin with plastic glitter / Polyethylene terephthalate glitters) — Synthetic material (Not a rock or mineral)

Synthetic Resin Charm (Seal Shape)

Polymer Resin with plastic glitter / Polyethylene terephthalate glitters

Synthetic material (Not a rock or mineral)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Bull Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Bull Quartz

Quartz (Silicon Dioxide - SiO2)

Obsidian (Volcanic Glass (SiO2 rich)) — igneous

Obsidian

Volcanic Glass (SiO2 rich)

Emerald and diamond ring (Emerald: beryl, Be3Al2Si6O18, colored green by chromium and/or vanadium; surrounding stones appear to be diamonds, crystalline carbon (C)) — gemstone

Emerald and diamond ring

Emerald: beryl, Be3Al2Si6O18, colored green by chromium and/or vanadium; surrounding stones appear to be diamonds, crystalline carbon (C)

Glass Nugget (Tumbled Glass) (Amorphous Silicon Dioxide (SiO2) with additives) — mineraloid (man-made)

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

mineraloid (man-made)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Small tumbled brown stone, likely iron-stained quartz or jasper (Quartz (SiO₂) or microcrystalline quartz (chalcedony/jasper), identification uncertain from the image) — mineral

Small tumbled brown stone, likely iron-stained quartz or jasper

Quartz (SiO₂) or microcrystalline quartz (chalcedony/jasper), identification uncertain from the image

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Likely calcite fragment (Calcite (calcium carbonate, CaCO₃)) — mineral

Likely calcite fragment

Calcite (calcium carbonate, CaCO₃)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Cullet Glass (Slag) (Amorphous Silicon Dioxide (Man-made)) — Mineraloid

Cullet Glass (Slag)

Amorphous Silicon Dioxide (Man-made)

Pink Quartzite (Quartzite (SiO2)) — metamorphic

Pink Quartzite

Quartzite (SiO2)

Obsidian (Amorphous volcanic glass (70-75% SiO2)) — igneous

Obsidian

Amorphous volcanic glass (70-75% SiO2)

Polished leopard-skin jasper (Orbicular jasper; microcrystalline quartz/chalcedony (SiO₂) with iron-oxide inclusions) — mineral

Polished leopard-skin jasper

Orbicular jasper; microcrystalline quartz/chalcedony (SiO₂) with iron-oxide inclusions

Red faceted gemstone ring (Likely synthetic ruby or red spinel; exact identification requires testing) — gemstone

Red faceted gemstone ring

Likely synthetic ruby or red spinel; exact identification requires testing

Black Obsidian (Volcanic Glass (Amorphous Silicon Dioxide)) — igneous

Black Obsidian

Volcanic Glass (Amorphous Silicon Dioxide)

Siltstone (Siltstone (composed of microscopic quartz and clay minerals)) — sedimentary

Siltstone

Siltstone (composed of microscopic quartz and clay minerals)

Drill Core Sample (Cylindrical Rock Core (Specific mineralogy varies by extraction site)) — Metamorphic (Likely Gneiss or Schist based on texture)

Drill Core Sample

Cylindrical Rock Core (Specific mineralogy varies by extraction site)

Metamorphic (Likely Gneiss or Schist based on texture)

Ironstone Concretion (Ironstone (Siderite/Goethite/Hematite matrix)) — sedimentary

Ironstone Concretion

Ironstone (Siderite/Goethite/Hematite matrix)

Obsidian (Volcanic glass (SiO2 - Silicon dioxide predominant composition)) — Igneous

Obsidian

Volcanic glass (SiO2 - Silicon dioxide predominant composition)

Raw greenish crystal/mineral fragment (Uncertain from image; possibly olivine (forsterite-rich), epidote, or green tourmaline) — mineral

Raw greenish crystal/mineral fragment

Uncertain from image; possibly olivine (forsterite-rich), epidote, or green tourmaline

Quartz with Mica inclusions (Gold-colored Mica) (Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (Phlogopite/Muscovite) inclusions) — Mineral

Quartz with Mica inclusions (Gold-colored Mica)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (Phlogopite/Muscovite) inclusions

River Cobble (Quartzite / Granitic Gneiss) (Metamorphic Quartzite / Granitic Gneiss) — metamorphic

River Cobble (Quartzite / Granitic Gneiss)

Metamorphic Quartzite / Granitic Gneiss

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Weathered polymictic gravel/conglomeratic rock (Polymictic conglomerate or poorly lithified alluvial gravel; chiefly quartz, feldspar, mica, and dark lithic fragments) — sedimentary

Weathered polymictic gravel/conglomeratic rock

Polymictic conglomerate or poorly lithified alluvial gravel; chiefly quartz, feldspar, mica, and dark lithic fragments

Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Obsidian

Volcanic Glass (predominantly SiO2)

Blue gemstone bead bracelet, likely dyed agate or another blue stone (Undetermined; possibly dyed chalcedony (microcrystalline quartz, SiO₂)) — gemstone

Blue gemstone bead bracelet, likely dyed agate or another blue stone

Undetermined; possibly dyed chalcedony (microcrystalline quartz, SiO₂)

Rounded iron-rich stone or concretion (Indeterminate; possibly hematite-/goethite-bearing sandstone or an ironstone concretion) — sedimentary

Rounded iron-rich stone or concretion

Indeterminate; possibly hematite-/goethite-bearing sandstone or an ironstone concretion

Obsidian (Volcanic Glass (70-75% SiO2)) — igneous

Obsidian

Volcanic Glass (70-75% SiO2)

Conglomerate (Conglomerate / Lithic Wacke) — sedimentary

Conglomerate

Conglomerate / Lithic Wacke

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Black tourmaline pendant (Schorl tourmaline, NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Black tourmaline pendant

Schorl tourmaline, NaFe3Al6(BO3)3Si6O18(OH)4

Limestone with Chert Nodule (Carbonate rock (CaCO3) with Microcrystalline Silicon Dioxide (SiO2) inclusion) — sedimentary

Limestone with Chert Nodule

Carbonate rock (CaCO3) with Microcrystalline Silicon Dioxide (SiO2) inclusion

Black Obsidian (Volcanic Glass (70–75% SiO2 plus MgO, Fe3O4)) — igneous

Black Obsidian

Volcanic Glass (70–75% SiO2 plus MgO, Fe3O4)

Gemstone ring, likely emerald and opal (Green beryl (Be₃Al₂Si₆O₁₈), with probable common opal (hydrated amorphous silica, SiO₂·nH₂O)) — gemstone

Gemstone ring, likely emerald and opal

Green beryl (Be₃Al₂Si₆O₁₈), with probable common opal (hydrated amorphous silica, SiO₂·nH₂O)

Obsidian (Volcanic Glass (70% or more SiO2)) — igneous

Obsidian

Volcanic Glass (70% or more SiO2)

Obsidian Arrowhead (Obsidian (volcanic glass, SiO2 rich)) — igneous

Obsidian Arrowhead

Obsidian (volcanic glass, SiO2 rich)

Obsidian (Volcanic Glass (Amorphous SiO2)) — igneous

Obsidian

Volcanic Glass (Amorphous SiO2)