Rock Identifier

Category

Synthetic Glass

Browse synthetic glass specimens identified by the Rock Identifier community.

Learn about Synthetic Glass in the encyclopedia

Opalite

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zincite

Sideromelane

Lead Feldspar

Black Obsidian

Maskelynite

Obsidian

Tachylite

Hyalite Opal

Perlite

Macusanite

Pumice (Pumice (Volcanic Rock / Glass Froth)) — igneous

Pumice

Pumice (Volcanic Rock / Glass Froth)

Pumice (or Volcanic Tuff / Ash) (Pumice / Pyroclastic rock) — igneous

Pumice (or Volcanic Tuff / Ash)

Pumice / Pyroclastic rock

Felsic Tuff (Pyroclastic volcanic rock (Tuff)) — igneous

Felsic Tuff

Pyroclastic volcanic rock (Tuff)

Pumice (Vesicular Rhyolite or Trachyte (High-silica volcanic glass)) — igneous

Pumice

Vesicular Rhyolite or Trachyte (High-silica volcanic glass)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Milky/Smoky mix) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Smoky mix)

Silicon Dioxide (SiO2)

Obsidian (Obsidian (Volcanic Glass, SiO2 + impurity)) — Igneous

Obsidian

Obsidian (Volcanic Glass, SiO2 + impurity)

Quartz with Inclusions (Silicon Dioxide (SiO2)) — mineral

Quartz with Inclusions

Silicon Dioxide (SiO2)

Quartz crystal (Quartz (Silicon dioxide, SiO2)) — mineral

Quartz crystal

Quartz (Silicon dioxide, SiO2)

Green Calcite or Prasiolite (Green Quartz) (Calcium carbonate (CaCO3) or Silicon dioxide (SiO2)) — mineral

Green Calcite or Prasiolite (Green Quartz)

Calcium carbonate (CaCO3) or Silicon dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — Mineral

Quartz pebble

Silicon dioxide (SiO2)

Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz with Iron Stains (Silicon Dioxide (SiO2) with FeOx inclusions) — mineral

Quartz with Iron Stains

Silicon Dioxide (SiO2) with FeOx inclusions

Tumbled blue stone, likely blue aventurine or dyed quartz (Quartz (SiO₂), possibly with fuchsite inclusions; exact identification requires testing) — mineral

Tumbled blue stone, likely blue aventurine or dyed quartz

Quartz (SiO₂), possibly with fuchsite inclusions; exact identification requires testing

Quartz-rich rock, possibly milky quartz or quartzite (Quartz (silicon dioxide, SiO₂); if granular and foliated, likely quartzite) — mineral

Quartz-rich rock, possibly milky quartz or quartzite

Quartz (silicon dioxide, SiO₂); if granular and foliated, likely quartzite

Quartz-rich breccia or vein quartz fragment (Quartz (SiO₂), likely with iron-oxide staining and attached host rock) — mineral

Quartz-rich breccia or vein quartz fragment

Quartz (SiO₂), likely with iron-oxide staining and attached host rock

Aventurine (Quartz with fuchsite inclusions (SiO2)) — mineral

Aventurine

Quartz with fuchsite inclusions (SiO2)

Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

Chert (River Pebble) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (River Pebble)

Chert (Cryptocrystalline Quartz, SiO2)

Quartzite Cobble (Quartzite (Silicon Dioxide: SiO2)) — metamorphic

Quartzite Cobble

Quartzite (Silicon Dioxide: SiO2)

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

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

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

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Chert (Concretion or Nodular Variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Concretion or Nodular Variety)

Microcrystalline Quartz (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

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

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Mica (Muscovite) in Granite (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Mica (Muscovite) in Granite

Muscovite (KAl2(AlSi3O10)(OH)2)

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

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite inclusions)

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

Aventurine (Green Quartz)

Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Quartzite river stone (Quartzite (SiO2)) — metamorphic

Quartzite river stone

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Chert (Microcrystalline or cryptocrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline or cryptocrystalline quartz (SiO2)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

Quartzite cobblestone (Quartzite (primarily SiO2)) — metamorphic

Quartzite cobblestone

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

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

Aventurine

Silicon Dioxide (SiO2 with inclusions of Fuchsite mica)

Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)