Rock Identifier

Category

Mineral And Glass

Browse mineral and glass specimens identified by the Rock Identifier community.

Learn about Mineral And Glass in the encyclopedia

Sideromelane

Black Obsidian

Maskelynite

Tachylite

Obsidian

Hyalite Opal

Perlite

Opalite

Macusanite

Pink Obsidian

Goldstone

Glauconite

Tumbled milky quartz (Quartz (silicon dioxide, SiO₂), microcrystalline or massive variety) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂), microcrystalline or massive variety

Sandstone (Weathered / Crushed) (Quartz Sandstone) — sedimentary

Sandstone (Weathered / Crushed)

Quartz Sandstone

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Cullet Glass (Slag Glass) (Amorphous Silicon Dioxide (Industrial byproduct)) — mineraloid

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial byproduct)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Green Obsidian Sphere (man-made glass) (Vitreous Silica with Chromium/Iron additives) — mineralogical simulant

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

mineralogical simulant

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Massive Quartz (Silicon dioxide (SiO2)) — mineral

Massive Quartz

Silicon dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Quartz (Iron-stained River Pebble)

Silicon Dioxide (SiO2)

Milky quartz (likely) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Quartz (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Quartz (Tumbled)

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble with Chert

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Raw Quartz (Silicon Dioxide (SiO2)) — mineral

Raw Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Iron-Stained) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Pebble (Iron-Stained)

Quartz (Silicon Dioxide - SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz (Crystal)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Banded Quartz (Silicon Dioxide (SiO2)) — mineral

Banded Quartz

Silicon Dioxide (SiO2)

Quartz crystal cluster in matrix (Silicon dioxide (SiO2)) — mineral

Quartz crystal cluster in matrix

Silicon dioxide (SiO2)

White quartz bead bracelet (likely milky quartz) (Quartz, silicon dioxide (SiO₂), usually microcrystalline or cloudy crystalline quartz) — mineral

White quartz bead bracelet (likely milky quartz)

Quartz, silicon dioxide (SiO₂), usually microcrystalline or cloudy crystalline quartz

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Mixed Mineral and Fossil Collection (Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)) — mineral

Mixed Mineral and Fossil Collection

Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Sea Glass (Silicon dioxide (mostly)) — mineral

Sea Glass

Silicon dioxide (mostly)

Sea Glass (Amorphous silicon dioxide (Man-made glass weathered by nature)) — mineral

Sea Glass

Amorphous silicon dioxide (Man-made glass weathered by nature)

Sea Glass (Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature) — mineral

Sea Glass

Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature

Sea Glass (Man-made vitreous material) — mineral

Sea Glass

Man-made vitreous material

Slag Glass (Anthropogenic Amorphous Silicon Dioxide) — mineral

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Milky Quartz Pebble with Matrix (Quartz (SiO2)) — mineral

Milky Quartz Pebble with Matrix

Quartz (SiO2)

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

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Milky Quartz with Limonite (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Limonite

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Smoky quartz (likely) (Quartz, silicon dioxide (SiO₂), naturally irradiated variety) — mineral

Smoky quartz (likely)

Quartz, silicon dioxide (SiO₂), naturally irradiated variety

Black Obsidian (Obsidian (Volcanic Glass)) — igneous

Black Obsidian

Obsidian (Volcanic Glass)

Black Obsidian (Volcanic Glass (SiO2)) — igneous

Black Obsidian

Volcanic Glass (SiO2)

Citrine or Yellow Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine or Yellow Quartz

Silicon Dioxide (SiO2) with iron impurities

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz / Quartzite (Silicon Dioxide (SiO2)) — minerals

Quartz / Quartzite

Silicon Dioxide (SiO2)