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

Oregon Opal

Orendite

Orthoclase

Orca Agate

Orange Opal

Peacock Ore

Orange Garnet

Oregon Sunstone

Oregon Sunstone

Orange Obsidian

Orange Calcite

Blue chalcedony (likely dyed or polished) (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Blue chalcedony (likely dyed or polished)

Chalcedony, microcrystalline quartz (SiO₂)

Blue Topaz (Topaz [Al2SiO4(F,OH)2]) — mineral

Blue Topaz

Topaz [Al2SiO4(F,OH)2]

Emerald (Beryl (Be3Al2(SiO3)6)) — gemstone

Emerald

Beryl (Be3Al2(SiO3)6)

Green Tiger's Eye (Quartz (SiO2) with fibrous crocidolite inclusions (dyed)) — mineral

Green Tiger's Eye

Quartz (SiO2) with fibrous crocidolite inclusions (dyed)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

White Sapphire (Corundum (Al2O3)) — mineral

White Sapphire

Corundum (Al2O3)

Opal (in Jewelry Setting) (Hydrated Silicon Dioxide (SiO2·nH2O)) — gemstone

Opal (in Jewelry Setting)

Hydrated Silicon Dioxide (SiO2·nH2O)

Ruby (faceted gemstone) (Corundum (Al2O3 with Cr impurities)) — gemstone

Ruby (faceted gemstone)

Corundum (Al2O3 with Cr impurities)

Blue Tiger's Eye (Hawk's Eye) (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Blue Tiger's Eye (Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

Chalcanthite (Copper(II) sulfate pentahydrate (CuSO4·5H2O)) — mineral

Chalcanthite

Copper(II) sulfate pentahydrate (CuSO4·5H2O)

Smoky Quartz (with Druzy/Polished Edge) (Smoky Quartz (Silicon Dioxide, SiO2)) — mineral

Smoky Quartz (with Druzy/Polished Edge)

Smoky Quartz (Silicon Dioxide, SiO2)

Faceted yellow gemstone, likely citrine (Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing) — gemstone

Faceted yellow gemstone, likely citrine

Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing

Tumbled blue chalcedony (likely common blue quartz) (Microcrystalline quartz, SiO₂; chalcedony variety) — mineral

Tumbled blue chalcedony (likely common blue quartz)

Microcrystalline quartz, SiO₂; chalcedony variety

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Polished blue chalcedony (likely seam agate) (Microcrystalline quartz, SiO₂; chalcedony with iron-oxide inclusions) — mineral

Polished blue chalcedony (likely seam agate)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide inclusions

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Ring with an Orange Inlay (N/A (Man-made object)) — Man-made Object (Ring)

Ring with an Orange Inlay

N/A (Man-made object)

Man-made Object (Ring)

Tiger's Eye (Multicolor/Variegated) (Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)) — mineral

Tiger's Eye (Multicolor/Variegated)

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)

Goldstone (with Tiger's Eye and Quartz) (Aventurine glass (Synthetic SiO2 with Cu inclusions)) — mineral

Goldstone (with Tiger's Eye and Quartz)

Aventurine glass (Synthetic SiO2 with Cu inclusions)

Blue Agate Geode (Dyed) (Cryptocrystalline Quartz (SiO2)) — mineral

Blue Agate Geode (Dyed)

Cryptocrystalline Quartz (SiO2)

Goldstone (Avventurina (Man-made Glass with Copper inclusions)) — mineral

Goldstone

Avventurina (Man-made Glass with Copper inclusions)

Chalcanthite (Likely Synthetic/Lab-Grown) (Hydrated copper(II) sulfate (CuSO4·5H2O)) — mineral

Chalcanthite (Likely Synthetic/Lab-Grown)

Hydrated copper(II) sulfate (CuSO4·5H2O)

Diamond (Carbon (C), Native Element) — mineral

Diamond

Carbon (C), Native Element

Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg,Fe)5Si8O22(OH)2

Diamond (Diamond (C - Pure Carbon)) — gemstone

Diamond

Diamond (C - Pure Carbon)

Lapis Lazuli (Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2) — metamorphic

Lapis Lazuli

Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Polished tiger’s-eye and jasper specimen (Quartz (SiO₂), chiefly fibrous chatoyant quartz, with iron-oxide-rich jasper/goethite) — gemstone

Polished tiger’s-eye and jasper specimen

Quartz (SiO₂), chiefly fibrous chatoyant quartz, with iron-oxide-rich jasper/goethite

Goldstone (Red/Brown) (Aventurine Glass (SiO2 with Copper inclusions)) — Mineral (Man-made glass)

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Mineral (Man-made glass)

Polished hematite bead necklace (Hematite (iron(III) oxide, Fe₂O₃), likely polished beads) — mineral

Polished hematite bead necklace

Hematite (iron(III) oxide, Fe₂O₃), likely polished beads

Blue Sapphire (Corundum (Al2O3) with traces of Iron and Titanium) — mineral

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Orange Sapphire (Corundum (Al2O3)) — gemstone

Orange Sapphire

Corundum (Al2O3)

Polished greenstone pebble (Likely nephrite jade (tremolite–actinolite), though serpentine or greenstone is possible from appearance alone) — metamorphic

Polished greenstone pebble

Likely nephrite jade (tremolite–actinolite), though serpentine or greenstone is possible from appearance alone

Opalite (Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)) — mineral

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)

Fursuit (Synthetic Fur Specimen) (Canis anthropomorphus syntheticus) — Anthropomorphic Textile Construct

Fursuit (Synthetic Fur Specimen)

Canis anthropomorphus syntheticus

Anthropomorphic Textile Construct

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities and natural radiation) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities and natural radiation

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Tumbled greenstone (likely nephrite jade) (Nephrite, an interlocking tremolite–actinolite amphibole aggregate; Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂) — metamorphic

Tumbled greenstone (likely nephrite jade)

Nephrite, an interlocking tremolite–actinolite amphibole aggregate; Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂

Clear quartz sphere (Quartz (silicon dioxide, SiO₂), likely rock crystal or low-grade milky quartz) — mineral

Clear quartz sphere

Quartz (silicon dioxide, SiO₂), likely rock crystal or low-grade milky quartz

Sapphire (Blue) (Corundum (Al2O3)) — mineral

Sapphire (Blue)

Corundum (Al2O3)

Diamond (Faceted) (Diamond (Pure Carbon, C)) — gemstone

Diamond (Faceted)

Diamond (Pure Carbon, C)

Polished pink banded agate (Microcrystalline quartz (chalcedony), SiO₂) — mineral

Polished pink banded agate

Microcrystalline quartz (chalcedony), SiO₂