Rock Identifier

Category

Organic (Non Rock)

Browse organic (non rock) specimens identified by the Rock Identifier community.

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

sedimentary
Amber (Amber (C10H16O)) — mineral

Amber

Amber (C10H16O)

mineral
Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Obsidian

Volcanic Glass (SiO2 + impurities)

igneous
Quartzite (Quartzite (chiefly SiO2)) — metamorphic

Quartzite

Quartzite (chiefly SiO2)

metamorphic
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

igneous
Native Gold (Gold (Au)) — mineral

Native Gold

Gold (Au)

mineral
Fancy Jasper (Silicon Dioxide (SiO2) with impurities) — mineral

Fancy Jasper

Silicon Dioxide (SiO2) with impurities

mineral
Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

igneous
Sea Glass (often mistaken for Gemstones) (Amorphous Silica (SiO2) with trace additives) — mineraloid

Sea Glass (often mistaken for Gemstones)

Amorphous Silica (SiO2) with trace additives

mineraloid
Anthracite Coal (Anthracite (Carbon)) — metamorphic

Anthracite Coal

Anthracite (Carbon)

metamorphic
Slag (Industrial By-product) (Anthropogenic Vitreous Silica/Iron Silicate) — mineral

Slag (Industrial By-product)

Anthropogenic Vitreous Silica/Iron Silicate

mineral
Cobalt Glass Slug (Man-made Glass) (Amorphous Silica with Cobalt Oxide (SiO2 + CoO)) — mineraloid

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

mineraloid
Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

igneous
Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Obsidian

Volcanic Glass (predominantly SiO2)

igneous
Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

mineral
Opalite (Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)) — mineraloid

Opalite

Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)

mineraloid
Mahogany Obsidian (Volcanic Glass with Hematite/Magnetite inclusions) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions

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

Obsidian

Volcanic Glass (Amorphous SiO2)

igneous
Quartzite Pebbles (Quartzite (SiO2)) — metamorphic

Quartzite Pebbles

Quartzite (SiO2)

metamorphic
Mahogany Obsidian (Volcanic glass containing Magnetite/Hematite) — igneous

Mahogany Obsidian

Volcanic glass containing Magnetite/Hematite

igneous
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

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

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite

mineral
Mahogany Obsidian (Volcanic glass (SiO2 with Hematite or Magnetite inclusions)) — igneous

Mahogany Obsidian

Volcanic glass (SiO2 with Hematite or Magnetite inclusions)

igneous
Turquoise and Red Coral (CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Corallium rubrum (Red Coral)) — mineral

Turquoise and Red Coral

CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Corallium rubrum (Red Coral)

mineral
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Quartzite (Quartzite (composed primarily of Quartz, SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of Quartz, SiO2)

metamorphic
Chert (Nodule) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Cryptocrystalline Quartz (SiO2)

sedimentary
Slag (Industrial Glass) (Artificial Vitreous Silicate) — mineraloid (anthropogenic)

Slag (Industrial Glass)

Artificial Vitreous Silicate

mineraloid (anthropogenic)
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

sedimentary
Kidney Stone (Calcium Oxalate (CaC2O4), Uric Acid, or Struvite) — mineral

Kidney Stone

Calcium Oxalate (CaC2O4), Uric Acid, or Struvite

mineral
Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

metamorphic
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Cullet (Slag Glass) (Amorphous Silica (Industrial byproduct)) — mineraloid

Cullet (Slag Glass)

Amorphous Silica (Industrial byproduct)

mineraloid
Anthracite Coal (High-rank coal (primarily Carbon, C)) — metamorphic

Anthracite Coal

High-rank coal (primarily Carbon, C)

metamorphic
Obsidian (Volcanic Glass (Amorphous Silica)) — igneous

Obsidian

Volcanic Glass (Amorphous Silica)

igneous
Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

igneous
Quartzite (Quartzite) — metamorphic

Quartzite

Quartzite

metamorphic
Green Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Green Chert

Microcrystalline Quartz (SiO2)

sedimentary
Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon Dioxide (SiO2)

sedimentary
Pearl (Aragonite / Calcium Carbonate (CaCO3)) — mineral

Pearl

Aragonite / Calcium Carbonate (CaCO3)

mineral