Rock Identifier

Category

Synthetic Polymer (Synthetic Material)

Browse synthetic polymer (synthetic material) specimens identified by the Rock Identifier community.

Learn about Synthetic Polymer (Synthetic Material) in the encyclopedia

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zincite

Opalite

Lead Feldspar

Peat

Zircon

Dunite

Limonite

Shell Opal

Madagascar Opal

Lavender Obsidian

Electric Blue Obsidian

Amber (Succinite (Formula: C10H16O)) — Mineraloid

Amber

Succinite (Formula: C10H16O)

Hand-Drawn Trading Card (Amateur Artwork) (Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)) — Organic/Synthetic Composite (Paper and Pigment)

Hand-Drawn Trading Card (Amateur Artwork)

Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)

Organic/Synthetic Composite (Paper and Pigment)

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate) (N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)) — Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)

Amber (Black) (Amber (succinite, retinite, etc., specifically, heavily included/dark varieties)) — Mineraloid

Amber (Black)

Amber (succinite, retinite, etc., specifically, heavily included/dark varieties)

Amber (Fossilized Tree Resin (Amorphous Hydrocarbon)) — Mineral

Amber

Fossilized Tree Resin (Amorphous Hydrocarbon)

Amber (Succinite (Fossilized Tree Resin)) — mineral

Amber

Succinite (Fossilized Tree Resin)

Glazed Ceramic Tile (Fused Silicate-Clay composite) — Synthetic (Man-made material mimicking natural stone)

Glazed Ceramic Tile

Fused Silicate-Clay composite

Synthetic (Man-made material mimicking natural stone)

Rhinestone (Artificial Glass/Crystal) — gemstone

Rhinestone

Artificial Glass/Crystal

Amber (Fossilized tree resin (not a true mineral as it is organic and amorphous); Chemical formula is highly variable, but often approximated as C10H16O.) — Mineral

Amber

Fossilized tree resin (not a true mineral as it is organic and amorphous); Chemical formula is highly variable, but often approximated as C10H16O.

Petrified Wood (Silicified Wood) — fossil

Petrified Wood

Silicified Wood

Petrified Wood (Fossilized plant material (Silicon dioxide - SiO2)) — fossil

Petrified Wood

Fossilized plant material (Silicon dioxide - SiO2)

Petrified Wood (Silicified Wood (Permineralized wood)) — fossil

Petrified Wood

Silicified Wood (Permineralized wood)

Sandstone (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite)

Petrified Wood (Fossilized wood / Silicified wood) — Sedimentary / Fossil

Petrified Wood

Fossilized wood / Silicified wood

Sedimentary / Fossil

Granite / Gneiss (Coarse-Grained Felsic Rock) (Granite (Quartz-Feldspar-Mica aggregate)) — igneous

Granite / Gneiss (Coarse-Grained Felsic Rock)

Granite (Quartz-Feldspar-Mica aggregate)

Fossilized wood fragment (Petrified wood; commonly silicified fossil wood (SiO₂ replacing organic tissue)) — fossil

Fossilized wood fragment

Petrified wood; commonly silicified fossil wood (SiO₂ replacing organic tissue)

Tektite (likely indochinite) (Natural silica-rich impact glass; predominantly amorphous SiO₂ with aluminum, iron, magnesium, calcium, and sodium) — mineral

Tektite (likely indochinite)

Natural silica-rich impact glass; predominantly amorphous SiO₂ with aluminum, iron, magnesium, calcium, and sodium

Sandstone (Sandstone (SiO2-rich clastic sedimentary rock)) — sedimentary

Sandstone

Sandstone (SiO2-rich clastic sedimentary rock)

Coquina (Fossiliferous Limestone) (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Coquina (Fossiliferous Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Amber (Copal) (Organic gemstone, fossilized tree resin (often immature amber or copal)) — Mineral

Amber (Copal)

Organic gemstone, fossilized tree resin (often immature amber or copal)

Coquina (Bioclastic Limestone) — sedimentary

Coquina

Bioclastic Limestone

Gastropod shell fragment (Calcareous mollusk shell; primarily aragonite or calcite (CaCO₃)) — fossil

Gastropod shell fragment

Calcareous mollusk shell; primarily aragonite or calcite (CaCO₃)

Granite (Unakite / Feldspar-rich Granite) (Granite (composed of Potassium Feldspar, Quartz, and Biotite/Epidote)) — igneous

Granite (Unakite / Feldspar-rich Granite)

Granite (composed of Potassium Feldspar, Quartz, and Biotite/Epidote)

Coquina (Coquina (Bioclastic Limestone)) — sedimentary

Coquina

Coquina (Bioclastic Limestone)

Quartzite (Quartzite (SiO2-rich metamorphic rock)) — metamorphic

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Sandstone (Arenite (primary component SiO2)) — sedimentary

Sandstone

Arenite (primary component SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Blue Sphalerite (likely dyed or treated Druzy Quartz/Agate) (Zinc Sulfide (ZnS) or Silicon Dioxide (SiO2) with trade-name enhancement) — Mineral

Blue Sphalerite (likely dyed or treated Druzy Quartz/Agate)

Zinc Sulfide (ZnS) or Silicon Dioxide (SiO2) with trade-name enhancement

Asphalt Concrete (Bituminous Concrete / Asphaltic Composite) — not a natural rock (man-made composite)

Asphalt Concrete

Bituminous Concrete / Asphaltic Composite

not a natural rock (man-made composite)

Crushed Stone / Gravel (Aggregate (mixed lithology)) — sedimentary

Crushed Stone / Gravel

Aggregate (mixed lithology)

Goldstone (Brown/Gold variety) (Aventurine Glass (SiO2 with Copper inclusions)) — Synthetic/Man-made glass (often mistaken for a mineral)

Goldstone (Brown/Gold variety)

Aventurine Glass (SiO2 with Copper inclusions)

Synthetic/Man-made glass (often mistaken for a mineral)

Tiger’s-eye bead bracelet (Chatoyant quartz, principally quartz (SiO₂) with pseudomorphic fibrous crocidolite/goethite inclusions) — gemstone

Tiger’s-eye bead bracelet

Chatoyant quartz, principally quartz (SiO₂) with pseudomorphic fibrous crocidolite/goethite inclusions

Tektite (Indochinite) (Tektite (High-silica impact glass)) — igneous

Tektite (Indochinite)

Tektite (High-silica impact glass)

Chert Pebble (Microcrystalline silica (SiO2)) — sedimentary

Chert Pebble

Microcrystalline silica (SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Orbicular Granite (specifically Mustard or Yellow Tonalite/Granodiorite) (Orbicular Quartz Diorite / Tonalite) — igneous

Orbicular Granite (specifically Mustard or Yellow Tonalite/Granodiorite)

Orbicular Quartz Diorite / Tonalite

Limestone (Weathered) (Sedimentary Carbonate Rock (CaCO3)) — sedimentary

Limestone (Weathered)

Sedimentary Carbonate Rock (CaCO3)

Red jasper-like chalcedony pebble (Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper) — mineral

Red jasper-like chalcedony pebble

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper

Jade (likely Nephrite or Jadeite) (Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)) — Metamorphic rock (for Nephrite and some Jadeite); Mineral (for Jadeite)

Jade (likely Nephrite or Jadeite)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Metamorphic rock (for Nephrite and some Jadeite); Mineral (for Jadeite)

Asphalt Chunk (Asphalt concrete) — man-made composite

Asphalt Chunk

Asphalt concrete

man-made composite

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)