Mineral (Synthetic Glass)

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

Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

mineral

Quartz Pebble

Quartz (Silicon Dioxide - SiO2)

mineral

Green Aventurine (Propably a tumbled variety)

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Green Slag Glass (Cullet)

Amorphous Silica (Industrial Glass Byproduct)

Synthetic/Byproduct (Non-igneous, non-sedimentary, non-metamorphic)

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Quartz (Milky Quartz / Greenish Quartz)

SiO2 (Silicon Dioxide)

mineral

Obsidian

Obsidian (Volcanic Glass, SiO2)

igneous

Obsidian (Gold Sheen)

Obsidian (SiO2 + impurities)

igneous

Orthoclase (Potassium Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

mineral

Green Aventurine

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

mineral

Quartz Pebble (with probable inclusions or staining)

Quartz (Silicon Dioxide - SiO2)

mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

mineral

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

mineral

Clear Quartz

Silicon Dioxide (SiO2)

mineral

Smoky Quartz (Vein Quartz)

Quartz (Silicon Dioxide, SiO2)

mineral

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Hematite inclusions

mineral

Quartz (Water-worn Pebble)

Quartz (Silicon Dioxide, SiO2)

mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

mineral

Green Slag Glass

Amorphous Silica Glass (Anthropogenic)

Industrial byproduct (often mistaken for obsidian or mineral)

Clear Quartz

Silicon Dioxide (SiO2)

mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

mineral

Amethyst

Amethyst (Silicon Dioxide - SiO2)

mineral

Smoky Quartz on Feldspar (Granite Pegmatite)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)

igneous

Snowflake Obsidian

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

igneous

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Citrine

Citrine (Silicon Dioxide - SiO2)

mineral

Muscovite Mica

Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2

mineral

Green Aventurine (Double-Terminated Wand)

Silicon Dioxide (SiO2) containing Fuchsite (Chromium-rich Muscovite Mica)

mineral

Green Aventurine

SiO2 (Silicon Dioxide) with Fuchsite inclusions

mineral

Muscovite Mica (with Quartz matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

mineral

Quartz (Iron-Stained or Milky Quartz)

Silicon Dioxide (SiO2)

mineral

Clear Quartz

Silicon Dioxide (SiO2)

Mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

mineral

Jasper Shard / Chert

Silicon dioxide (SiO2)

sedimentary

Milky Quartz

Silicon Dioxide (SiO2)

mineral