Rock Identifier

Category

Synthetic Or Natural Fiber

Browse synthetic or natural fiber specimens identified by the Rock Identifier community.

Learn about Synthetic Or Natural Fiber in the encyclopedia

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zircon

Zircon

Oregon Opal

Oregon Opal

Orendite

Orendite

Orthoclase

Orthoclase

Orca Agate

Orca Agate

Orange Opal

Orange Opal

Peacock Ore

Peacock Ore

Orange Garnet

Orange Garnet

Oregon Sunstone

Oregon Sunstone

Orange Obsidian

Orange Obsidian

Orange Calcite

Orange Calcite

Sandstone (Quartzose) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Beach Pebble (Basalt/Greywacke) (Amygdaloidal Basalt) — igneous

Beach Pebble (Basalt/Greywacke)

Amygdaloidal Basalt

Chrysoberyl (Cyclic Twin) (Beryllium Aluminum Oxide (BeAl2O4)) — mineral

Chrysoberyl (Cyclic Twin)

Beryllium Aluminum Oxide (BeAl2O4)

Sandstone Beach Pebble (Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)) — sedimentary

Sandstone Beach Pebble

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)

Blue Quartz (specifically Dumortierite Quartz) (SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)) — mineral

Blue Quartz (specifically Dumortierite Quartz)

SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)

Blue Lace Agate (often dyed) (Silicon dioxide (SiO2) - variety of chalcedony) — mineral

Blue Lace Agate (often dyed)

Silicon dioxide (SiO2) - variety of chalcedony

Amethyst (Faceted) (Amethyst (Silicon Dioxide with iron impurities, SiO2)) — mineral

Amethyst (Faceted)

Amethyst (Silicon Dioxide with iron impurities, SiO2)

Quartz Crystal (specifically a Double-Terminated variety) (Silicon Dioxide (SiO2) - Low Quartz) — mineral

Quartz Crystal (specifically a Double-Terminated variety)

Silicon Dioxide (SiO2) - Low Quartz

Dyed Quartz Geode (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Amber (Succinite) — mineral

Amber

Succinite

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

Citrine Quartz

Citrine (Silicon Dioxide, SiO2)

Emerald (Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Granite (Phaneritic Intrusive Igneous Rock (composed of Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Intrusive Igneous Rock (composed of Quartz, Feldspar, and Mica)

Tufa (Calcareous Tufa (CaCO3)) — sedimentary

Tufa

Calcareous Tufa (CaCO3)

Chert (specifically Dark Chert or Flint) (Silicon dioxide (SiO2)) — sedimentary

Chert (specifically Dark Chert or Flint)

Silicon dioxide (SiO2)

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

Native Copper (in coinage alloy) (Copper (Cu)) — mineral

Native Copper (in coinage alloy)

Copper (Cu)

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Slag Glass (Amorphous Silica Glass (with metal oxide inclusions)) — Mineraloid / Industrial Waste

Slag Glass

Amorphous Silica Glass (with metal oxide inclusions)

Mineraloid / Industrial Waste

Rough Diamond (Native Carbon (C)) — mineral

Rough Diamond

Native Carbon (C)

Rough Diamond (Diamond (pure carbon / C)) — mineral

Rough Diamond

Diamond (pure carbon / C)

Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — mineral

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Polychrome Jasper (Silicon Dioxide (SiO2) with iron and other mineral inclusions) — sedimentary

Polychrome Jasper

Silicon Dioxide (SiO2) with iron and other mineral inclusions

Stichtite in Serpentine (Atlantasite) (Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)) — Metamorphic rock / Mineral variety

Stichtite in Serpentine (Atlantasite)

Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)

Metamorphic rock / Mineral variety

Vesicular Basalt (or Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (or Scoria)

Vesicular Basalt

Agate (Moss or Banded Agate variety) (Agate (Silicon Dioxide - SiO2)) — mineral

Agate (Moss or Banded Agate variety)

Agate (Silicon Dioxide - SiO2)

Quartz (Citrine or Iron-Stained variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine or Iron-Stained variety)

Silicon Dioxide (SiO2)

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Green Slag Glass (Amorphous Silica / Glassy Blast Furnace Slag) — Mineraloid (Industrial byproduct)

Green Slag Glass

Amorphous Silica / Glassy Blast Furnace Slag

Mineraloid (Industrial byproduct)

Iron-Stained Quartz Pebble (Silicon Dioxide (SiO2) with Hematite/Limonite impurities) — mineral

Iron-Stained Quartz Pebble

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Pink Dyed Agate (Pink Agate Slice) (Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz) — mineral

Pink Dyed Agate (Pink Agate Slice)

Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz

Silicon (Silicon (Si)) — mineral

Silicon

Silicon (Si)

Hematite (Iron (III) Oxide (Fe2O3)) — mineral

Hematite

Iron (III) Oxide (Fe2O3)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

Granite (Phaneritic intrusive felsic igneous rock) — igneous

Granite

Phaneritic intrusive felsic igneous rock