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

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

Quartz Crystal Matrix

Silicon Dioxide (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Garden Quartz (Lodalite) (Silicon Dioxide with various mineral inclusions (SiO2)) — mineral

Garden Quartz (Lodalite)

Silicon Dioxide with various mineral inclusions (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Muscovite Mica (Granitic Pegmatite) (Muscovite - KAl2(AlSi3O10)(OH)2) — igneous

Muscovite Mica (Granitic Pegmatite)

Muscovite - KAl2(AlSi3O10)(OH)2

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Green Aventurine and Clear Quartz Bracelet (Quartz variety with Fuchsite inclusions (Aventurine) and pure Silicon Dioxide (SiO2)) — gemstone

Green Aventurine and Clear Quartz Bracelet

Quartz variety with Fuchsite inclusions (Aventurine) and pure Silicon Dioxide (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Goldstone (blue-goldstone–style glass) beads (Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral) — mineral

Goldstone (blue-goldstone–style glass) beads

Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral

Quartz Vein in Sedimentary Rock (Silicon Dioxide (SiO2) with host Chert or Limestone) — mineral

Quartz Vein in Sedimentary Rock

Silicon Dioxide (SiO2) with host Chert or Limestone

Snowflake Obsidian (Obsidian with Cristobalite inclusions (mostly amorphous SiO2)) — igneous

Snowflake Obsidian

Obsidian with Cristobalite inclusions (mostly amorphous SiO2)

Iron-stained Quartz (Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Goethite) inclusions) — mineral

Iron-stained Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Goethite) inclusions

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

Tumbled Clear Quartz/Rock Crystal

Silicon Dioxide (SiO2)

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

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Sandstone (with Limonite staining) (Arenite (primarily SiO2 with FeO(OH)·nH2O)) — sedimentary

Sandstone (with Limonite staining)

Arenite (primarily SiO2 with FeO(OH)·nH2O)

Arsenopyrite in Quartz Matrix (Arsenopyrite (FeAsS) with Quartz (SiO2)) — mineral

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

Amethyst (Tumbled Quarz) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Tumbled Quarz)

Silicon Dioxide (SiO2) with iron impurities

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Vein Rock (Silicon Dioxide (SiO2)) — mineral

Quartz Vein Rock

Silicon Dioxide (SiO2)

Sheen Obsidian (Volcanic glass (SiO2 with inclusions)) — igneous

Sheen Obsidian

Volcanic glass (SiO2 with inclusions)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Tumbled quartz crystal (likely smoky or iron-stained quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Tumbled quartz crystal (likely smoky or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Quartz (Milky/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Chalcedony variety)

Silicon Dioxide (SiO2)

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

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Mica Matrix (SiO2 (Silicon Dioxide) with Muscovite/Biotite mica) — mineral

Milky Quartz with Mica Matrix

SiO2 (Silicon Dioxide) with Muscovite/Biotite mica

Amethyst geode (Quartz (SiO₂), purple variety amethyst; commonly in basalt-hosted geodes) — mineral

Amethyst geode

Quartz (SiO₂), purple variety amethyst; commonly in basalt-hosted geodes

Potassium Feldspar (Orthoclase) (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Blue Goldstone (Goldstone (artificial glass)) — Mineral (man-made glass, not natural)

Blue Goldstone

Goldstone (artificial glass)

Mineral (man-made glass, not natural)

Quartz with Sulfide Inclusions (Silicon Dioxide (SiO2) with metallic mineral inclusions) — mineral

Quartz with Sulfide Inclusions

Silicon Dioxide (SiO2) with metallic mineral inclusions

Muscovite Mica (Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2) — Mineral

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)