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

Pink Quartz (Silicon Dioxide (SiO2)) — mineral

Pink Quartz

Silicon Dioxide (SiO2)

Tiger's Eye (Pendant) (Quartz Pseudomorph (SiO2) after Crocidolite) — mineral

Tiger's Eye (Pendant)

Quartz Pseudomorph (SiO2) after Crocidolite

Tiger's Eye (Quartz Pseudomorph (SiO2 with inclusions of Crocidolite)) — mineral

Tiger's Eye

Quartz Pseudomorph (SiO2 with inclusions of Crocidolite)

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

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Basalt (Mafic volcanic rock) — igneous

Basalt

Mafic volcanic rock

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

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

Tiger's Eye (Raw)

Pseudomorph of Quartz after Crocidolite (SiO2)

Tiger's Eye (Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2) — Mineral

Tiger's Eye

Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Tumbled tiger’s eye (Quartz variety, mainly SiO₂ with fibrous crocidolite pseudomorphs) — mineral

Tumbled tiger’s eye

Quartz variety, mainly SiO₂ with fibrous crocidolite pseudomorphs

Plastic Building Toy (Lego-style piece) (Acrylonitrile Butadiene Styrene (ABS)) — not a rock/mineral

Plastic Building Toy (Lego-style piece)

Acrylonitrile Butadiene Styrene (ABS)

not a rock/mineral

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Tiger's Eye (Silicon Dioxide (Quartz pseudomorph after crocidolite)) — gemstone

Tiger's Eye

Silicon Dioxide (Quartz pseudomorph after crocidolite)

Tiger's Eye (Quartz pseudomorph after crocidolite (SiO2)) — gemstone

Tiger's Eye

Quartz pseudomorph after crocidolite (SiO2)

Tiger's Eye (Silicon Dioxide with Crocidolite inclusions (SiO2)) — mineral

Tiger's Eye

Silicon Dioxide with Crocidolite inclusions (SiO2)

Pink Quartz (Silicon Dioxide (SiO2)) — mineral

Pink Quartz

Silicon Dioxide (SiO2)

Basalt Pebble (Extrusive igneous rock) — igneous

Basalt Pebble

Extrusive igneous rock

Basalt with olivine (Porphyritic Basalt) (Mafic Igneous Volcanic Rock (Extrusive Basalt)) — igneous

Basalt with olivine (Porphyritic Basalt)

Mafic Igneous Volcanic Rock (Extrusive Basalt)

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Bouncy Ball (Synthetic Rubber Polymer) (Polybutadiene / Ethylene Vinyl Acetate (EVA)) — Synthetic material (Not a rock or mineral)

Bouncy Ball (Synthetic Rubber Polymer)

Polybutadiene / Ethylene Vinyl Acetate (EVA)

Synthetic material (Not a rock or mineral)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Tiger's Eye (Pseudomorph of quartz after crocidolite (SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of quartz after crocidolite (SiO2)

Rutilated Quartz Bracelet (Quartz (Silicon Dioxide, SiO2) with inclusions of Rutile (Titanium Dioxide, TiO2)) — gemstone

Rutilated Quartz Bracelet

Quartz (Silicon Dioxide, SiO2) with inclusions of Rutile (Titanium Dioxide, TiO2)

Borosilicate Glass (Manufactured) (SiO2 + B2O3 (Silicon dioxide and Boron trioxide)) — Synthetic/Amorphous Solid

Borosilicate Glass (Manufactured)

SiO2 + B2O3 (Silicon dioxide and Boron trioxide)

Synthetic/Amorphous Solid

Serpentinite (likely) (Serpentinite, dominated by serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and relic olivine/pyroxene) — metamorphic

Serpentinite (likely)

Serpentinite, dominated by serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and relic olivine/pyroxene

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — gemstone

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Tiger's Eye (Pseudomorph of Quartz (SiO2) after Crocidolite) — mineral

Tiger's Eye

Pseudomorph of Quartz (SiO2) after Crocidolite

Blue Tiger's Eye (Silicified Riebeckite (SiO2)) — mineral

Blue Tiger's Eye

Silicified Riebeckite (SiO2)

Hematite (Iron(III) oxide, Fe2O3) — mineral

Hematite

Iron(III) oxide, Fe2O3

Lapis Lazuli (Lazurite-dominant metamorphic rock, Na8[Al6Si6O24]n(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Lazurite-dominant metamorphic rock, Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Petrified Wood (Silicified Wood (SiO2 permineralization)) — fossil

Petrified Wood

Silicified Wood (SiO2 permineralization)

Petrified Wood (Silicified Wood (primarily Chalcedony/Quartz, SiO2)) — fossil

Petrified Wood

Silicified Wood (primarily Chalcedony/Quartz, SiO2)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Tumbled Stones Collection (Tiger's Eye, Snowflake Obsidian, Aventurine, etc.) (Silica minerals (primarily SiO2)) — mineral

Tumbled Stones Collection (Tiger's Eye, Snowflake Obsidian, Aventurine, etc.)

Silica minerals (primarily SiO2)

Tiger's Eye (Tumbled) (Silicified Riebeckite (SiO2 with Iron inclusions)) — mineral

Tiger's Eye (Tumbled)

Silicified Riebeckite (SiO2 with Iron inclusions)