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 (lithic/greywacke variant) (Clastic sedimentary rock (primarily SiO2 with rock fragments)) — sedimentary

Sandstone (lithic/greywacke variant)

Clastic sedimentary rock (primarily SiO2 with rock fragments)

Dyed Agate Geode Slice (Silicon Dioxide (SiO2) - Banded Chalcedony) — mineral

Dyed Agate Geode Slice

Silicon Dioxide (SiO2) - Banded Chalcedony

Citrine Quartz (Silicon Dioxide (SiO2) with trace Iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with trace Iron impurities

Shiva Lingam (Cryptocrystalline Quartz (Jasperiod Siltstone)) — sedimentary

Shiva Lingam

Cryptocrystalline Quartz (Jasperiod Siltstone)

Green Aventurine (Silicon dioxide (SiO2) with inclusions of Fuchsite) — metamorphic

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite

Howlite (White Buffalo Turquoise) (Howlite (Calcium Borosilicate Hydroxide), Ca2B5SiO9(OH)5) — mineral

Howlite (White Buffalo Turquoise)

Howlite (Calcium Borosilicate Hydroxide), Ca2B5SiO9(OH)5

Aventurine Quartz (Silicon dioxide with inclusions (KAl2(AlSi3O10)(OH,F)2)) — metamorphic

Aventurine Quartz

Silicon dioxide with inclusions (KAl2(AlSi3O10)(OH,F)2)

Mystic Topaz (Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)) — mineral

Mystic Topaz

Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)

Sandstone (with Iron Staining) (Clastic sedimentary rock (SiO2 with Fe2O3 oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (SiO2 with Fe2O3 oxides)

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

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Chalk (Micrite (primarily Calcium Carbonate, CaCO3)) — sedimentary

Chalk

Micrite (primarily Calcium Carbonate, CaCO3)

Tektite (Tektite (Natural Glassy Ejecta)) — mineral

Tektite

Tektite (Natural Glassy Ejecta)

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

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Rutilated Quartz (Rutile in Quartz (SiO2 with TiO2 inclusions)) — mineral

Rutilated Quartz

Rutile in Quartz (SiO2 with TiO2 inclusions)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Uraninite (Pitchblende) (Uranium dioxide (UO2)) — mineral

Uraninite (Pitchblende)

Uranium dioxide (UO2)

Blue Slag Glass (Amorphous Silica (Industrial byproduct)) — Antropogenic (Man-made glass byproduct)

Blue Slag Glass

Amorphous Silica (Industrial byproduct)

Antropogenic (Man-made glass byproduct)

Yellow Quartz / Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Rough Diamond (Pure Carbon (C)) — mineral

Rough Diamond

Pure Carbon (C)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Citrine (Yellow Quartz (SiO2)) — mineral

Citrine

Yellow Quartz (SiO2)

Raw Diamond (Carbon (C)) — mineral

Raw Diamond

Carbon (C)

Emerald (Faceted Gemstone) (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Emerald (Faceted Gemstone)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Raw Diamond (Diamond (C)) — mineral

Raw Diamond

Diamond (C)

Sandstone (Quartz Sandstone) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartz Sandstone)

Clastic sedimentary rock (primarily SiO2)

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

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Dyed Agate (Silicon Dioxide (SiO2)) — mineral

Dyed Agate

Silicon Dioxide (SiO2)

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

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

Citrine Quartz Geode

Silicon Dioxide (SiO2) with iron impurities

Ferruginous Quartz (Hematoid Quartz) (Silicon Dioxide (SiO2) with Hematite or Goethite inclusions) — mineral

Ferruginous Quartz (Hematoid Quartz)

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Red Tiger's Eye (SiO2 (Silicon Dioxide) - Pseudomorph of Quartz after Crocidolite) — mineral

Red Tiger's Eye

SiO2 (Silicon Dioxide) - Pseudomorph of Quartz after Crocidolite

Emerald (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Blue Crackle Quartz (Dyed Fire Agate/Quartz) (Silicon Dioxide (SiO2) with artificial dye treatment) — mineral

Blue Crackle Quartz (Dyed Fire Agate/Quartz)

Silicon Dioxide (SiO2) with artificial dye treatment

Ruby (Raw Corundum) (Corundum (Al2O3:Cr)) — mineral

Ruby (Raw Corundum)

Corundum (Al2O3:Cr)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

River Quartzite (River Stone) (Quartzite (primarily SiO2)) — metamorphic

River Quartzite (River Stone)

Quartzite (primarily SiO2)

Sandstone Pebble (Arenite (primarily SiO2)) — sedimentary

Sandstone Pebble

Arenite (primarily SiO2)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Pearl (Biogenic Mineraloid) (Calcium carbonate (CaCO3) primarily as Aragonite) — mineral

Pearl (Biogenic Mineraloid)

Calcium carbonate (CaCO3) primarily as Aragonite

Banded Slate (Sedimentary Pebble) (Slate (Metamorphosed Shale or Mudstone)) — metamorphic

Banded Slate (Sedimentary Pebble)

Slate (Metamorphosed Shale or Mudstone)