Rock Identifier

Category

Mineral Simulant (Synthetic Glass)

Browse mineral simulant (synthetic glass) specimens identified by the Rock Identifier community.

Learn about Mineral Simulant (Synthetic Glass) in the encyclopedia

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Opalite

Zincite

Sideromelane

Lead Feldspar

Black Obsidian

Maskelynite

Tachylite

Obsidian

Hyalite Opal

Perlite

Macusanite

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Tumbled quartz-rich stone, likely milky quartz (Quartz (SiO₂), possibly iron-stained milky quartz or quartzite) — mineral

Tumbled quartz-rich stone, likely milky quartz

Quartz (SiO₂), possibly iron-stained milky quartz or quartzite

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Red aventurine (Silicon Dioxide (SiO2) with Hematite or Goethite inclusions) — metamorphic

Red aventurine

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Quartz (Tumbled/Polished Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Tumbled/Polished Pebble)

Silicon Dioxide (SiO2)

Clear quartz crystal point (Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal) — mineral

Clear quartz crystal point

Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal

Coarse Sand and River Gravel (Siliciclastic Sediment (primarily Quartz and Feldspar)) — sedimentary

Coarse Sand and River Gravel

Siliciclastic Sediment (primarily Quartz and Feldspar)

Likely quartz-rich river pebble (Milky quartz or quartz-bearing granitic/gneissic fragment (SiO₂-dominant)) — igneous

Likely quartz-rich river pebble

Milky quartz or quartz-bearing granitic/gneissic fragment (SiO₂-dominant)

Rough Quartz (Alluvial Pebbles) (Silicon Dioxide (SiO2)) — mineral

Rough Quartz (Alluvial Pebbles)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Banded calcite/aragonite mineral specimen (tentative) (Calcite (CaCO₃), possibly with aragonite or crystalline carbonate growth) — mineral

Banded calcite/aragonite mineral specimen (tentative)

Calcite (CaCO₃), possibly with aragonite or crystalline carbonate growth

Green Slag Glass (Amorphous Silica Glass (Anthropogenic)) — Industrial byproduct (often mistaken for obsidian or mineral)

Green Slag Glass

Amorphous Silica Glass (Anthropogenic)

Industrial byproduct (often mistaken for obsidian or mineral)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz with Iron Staining (Silicon dioxide (SiO2)) — mineral

Quartz with Iron Staining

Silicon dioxide (SiO2)

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

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Gold Sheen Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Gold Sheen Obsidian

Volcanic Glass (SiO2 + impurities)

Silver Flakes in Glass (Silver (Ag)) — mineral

Silver Flakes in Glass

Silver (Ag)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Faceted) (Silicon dioxide (SiO2)) — gemstone

Clear Quartz (Faceted)

Silicon dioxide (SiO2)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Sedimentary Rock (Quartz arenite or arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite or arkose)

Tumbled chalcedony (likely moss or dendritic agate) (Microcrystalline quartz, SiO₂, with iron-oxide inclusions) — mineral

Tumbled chalcedony (likely moss or dendritic agate)

Microcrystalline quartz, SiO₂, with iron-oxide inclusions

Slag (Anthropogenic Iron Silicate Glass) — mineral

Slag

Anthropogenic Iron Silicate Glass

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Possible tektite or volcanic glass specimen (Natural silica glass; composition commonly near SiO₂, but exact identification requires chemical testing) — mineral

Possible tektite or volcanic glass specimen

Natural silica glass; composition commonly near SiO₂, but exact identification requires chemical testing

Quartz (Sea Glass or River-worn Pebble style) (Silicon Dioxide (SiO2)) — mineral

Quartz (Sea Glass or River-worn Pebble style)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Granite (River Pebble) (Phaneritic intrusive igneous rock (Felsic)) — igneous

Granite (River Pebble)

Phaneritic intrusive igneous rock (Felsic)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

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

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Green Quartz (Prasiolite/Adventurine) (Silicon Dioxide with inclusions (SiO2)) — mineral

Green Quartz (Prasiolite/Adventurine)

Silicon Dioxide with inclusions (SiO2)