Rock Identifier

Category

Glass

Browse glass specimens identified by the Rock Identifier community.

Learn about Glass in the encyclopedia

Sideromelane

Sideromelane

Black Obsidian

Black Obsidian

Maskelynite

Maskelynite

Obsidian

Obsidian

Tachylite

Tachylite

Hyalite Opal

Hyalite Opal

Macusanite

Macusanite

Perlite

Perlite

Opalite

Opalite

Pink Obsidian

Pink Obsidian

Goldstone

Goldstone

Palagonite

Palagonite

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Pink Quartzite (Quartzite (primarily SiO2)) — metamorphic

Pink Quartzite

Quartzite (primarily SiO2)

Green Aventurine (Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2) — mineral

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite Cobble (Quartzite) — metamorphic

Quartzite Cobble

Quartzite

Quartzite (Quartzite (Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (Silicon Dioxide, SiO2)

Green Aventurine (Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine

Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite mica) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Green Aventurine (Silicon Dioxide (Quartz with Fuchsite inclusions, SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — metamorphic

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions, SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Chert (Banded) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Banded)

Microcrystalline Quartz (SiO2)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Mica (Lepidolite or Muscovite) (Phyllosilicate mineral (KAl2(AlSi3O10)(OH)2 for Muscovite)) — mineral

Mica (Lepidolite or Muscovite)

Phyllosilicate mineral (KAl2(AlSi3O10)(OH)2 for Muscovite)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

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

River Stone (Quartzite)

Metamorphic Quartzite (primarily SiO2)

Chert (Quartzite-rich River Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Quartzite-rich River Pebble)

Silicon Dioxide (SiO2)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite mica) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Green Aventurine (Aventurine Quartz (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Chert (varietal Flint or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (varietal Flint or Jasper)

Silicon Dioxide (SiO2)

Chert (with Limestone/Carbonate matrix) (Sedimentary cryptocrystalline silica (SiO2)) — sedimentary

Chert (with Limestone/Carbonate matrix)

Sedimentary cryptocrystalline silica (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Chert (Jasper/Jasperoid) (Chert (chemically precipitated microcrystalline Quartz, SiO2)) — sedimentary

Chert (Jasper/Jasperoid)

Chert (chemically precipitated microcrystalline Quartz, SiO2)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Chert (specifically Flint or Jasper-Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Jasper-Chert)

Silicon Dioxide (SiO2)

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

Chert (Chert Nodule)

Silicon Dioxide (SiO₂)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Ferruginous Quartzite (Red Quartzite) (Quartzite (primarily SiO2 with Fe2O3 inclusions)) — metamorphic

Ferruginous Quartzite (Red Quartzite)

Quartzite (primarily SiO2 with Fe2O3 inclusions)

Quartzite (Metamorphic Quartz (SiO2)) — metamorphic

Quartzite

Metamorphic Quartz (SiO2)

Green Aventurine (Quartz variety (SiO2 with inclusions of Fuchsite)) — mineral

Green Aventurine

Quartz variety (SiO2 with inclusions of Fuchsite)

Chert (specifically Flint or Common Chert) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Common Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Chert (Nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Chert Concretion (Silicon dioxide (SiO2)) — sedimentary

Chert Concretion

Silicon dioxide (SiO2)

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

Quartzite River Rock

Metamorphic Quartzite (primarily SiO2)

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

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Yellow Aventurine (Silicon Dioxide (Quartzite) with minor inclusions (SiO2)) — metamorphic

Yellow Aventurine

Silicon Dioxide (Quartzite) with minor inclusions (SiO2)

Quartzite with Milky Quartz Vein (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite with Milky Quartz Vein

Metamorphosed Quartz Sandstone (SiO2)