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 (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Pumice (Pumice (volcanic glass froth)) — igneous

Pumice

Pumice (volcanic glass froth)

Quartz Pebbles (Silicon Dioxide (SiO2)) — mineral

Quartz Pebbles

Silicon Dioxide (SiO2)

Polished brown stone, likely smoky quartz or jasper (Tentatively quartz (SiO₂), possibly smoky quartz; exact identification requires testing) — mineral

Polished brown stone, likely smoky quartz or jasper

Tentatively quartz (SiO₂), possibly smoky quartz; exact identification requires testing

Pumice (Pumice (a vesicular volcanic glass)) — igneous

Pumice

Pumice (a vesicular volcanic glass)

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

Pumice (Pumiceous rhyolite / Volcanic glass) — igneous

Pumice

Pumiceous rhyolite / Volcanic glass

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Quartz Pebble (Crystalline Silica (SiO2)) — mineral

Quartz Pebble

Crystalline Silica (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Tektite (Indochinite) (Tektite (Terrestrial Impact Glass)) — meteorite

Tektite (Indochinite)

Tektite (Terrestrial Impact Glass)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Grey Quartz (likely Smoky Quartz or Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Grey Quartz (likely Smoky Quartz or Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Small Grains) (Silicon Dioxide (SiO2)) — mineral

Quartz (Small Grains)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Pumice (Pumice (volcanic glass foam)) — igneous

Pumice

Pumice (volcanic glass foam)

Pumice (Volcanic glass / Pumiceous rock) — igneous

Pumice

Volcanic glass / Pumiceous rock

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Rose Quartz (Quartz (Silicon Dioxide, SiO2) with trace inclusions of dumortierite) — mineral

Rose Quartz

Quartz (Silicon Dioxide, SiO2) with trace inclusions of dumortierite

Obsidian (Volcanic Glass (Amorphous silicon dioxide with trace impurities)) — igneous

Obsidian

Volcanic Glass (Amorphous silicon dioxide with trace impurities)

Pumice (Vesicular Rhyolite (Amorphous glass)) — igneous

Pumice

Vesicular Rhyolite (Amorphous glass)

Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Obsidian

Volcanic Glass (predominantly SiO2)

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

Chert

Chert (Microcrystalline Quartz, SiO2)

Snowflake Obsidian (Volcanic Glass with Cristobalite inclusions (70–75% SiO2)) — Igneous

Snowflake Obsidian

Volcanic Glass with Cristobalite inclusions (70–75% SiO2)

Obsidian (Polished Point/Wand) (Volcanic Glass (SiO2 with impurities)) — igneous

Obsidian (Polished Point/Wand)

Volcanic Glass (SiO2 with impurities)

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

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Flint (chert), likely brown flint (Microcrystalline quartz/chalcedony (SiO₂)) — sedimentary

Flint (chert), likely brown flint

Microcrystalline quartz/chalcedony (SiO₂)

Chert (Nodule) (Cryptocrystalline Silica (SiO2)) — sedimentary

Chert (Nodule)

Cryptocrystalline Silica (SiO2)

Glazed Ceramic Tile (Fused Silicate-Clay composite) — Synthetic (Man-made material mimicking natural stone)

Glazed Ceramic Tile

Fused Silicate-Clay composite

Synthetic (Man-made material mimicking natural stone)

Snowflake Obsidian (Tumbled) (Obsidian with Cristobalite inclusions) — igneous

Snowflake Obsidian (Tumbled)

Obsidian with Cristobalite inclusions

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

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Diamond (or Simulant) (Carbon (C)) — gemstone

Diamond (or Simulant)

Carbon (C)

Basalt (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Chert (Jasper/Flint variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Chert (specifically Tan/Gray Chert) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (specifically Tan/Gray Chert)

Microcrystalline quartz (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Nut (SiO2 (Silicon Dioxide)) — mineral health

Quartz Nut

SiO2 (Silicon Dioxide)