Rock Identifier

Category

Not A Natural Rock (Man Made Composite)

Browse not a natural rock (man made composite) specimens identified by the Rock Identifier community.

Learn about Not A Natural Rock (Man Made Composite) in the encyclopedia

Asphalt Rock

Rock Gypsum

Talc-carbonate Rock

Talc-carbonate Rock

Opalite

Chalk

Goldstone

Anorthosite

Albitite

Dunite

Gondite

Limestone

Coquina

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

Citrine Quartz (Carved Point)

Silicon Dioxide (SiO2) with iron impurities

Tumbled green jasper (probable serpentine-rich stone) (Jasper, microcrystalline quartz (SiO₂), possibly mixed with serpentine or chlorite) — mineral

Tumbled green jasper (probable serpentine-rich stone)

Jasper, microcrystalline quartz (SiO₂), possibly mixed with serpentine or chlorite

Carnelian/chalcedony rough (Microcrystalline quartz (SiO₂), iron-oxide-colored chalcedony) — mineral

Carnelian/chalcedony rough

Microcrystalline quartz (SiO₂), iron-oxide-colored chalcedony

Tumbled chalcedony or quartz-rich stone (Microcrystalline quartz, SiO₂; possibly pale chert or chalcedony) — mineral

Tumbled chalcedony or quartz-rich stone

Microcrystalline quartz, SiO₂; possibly pale chert or chalcedony

Hematite bead bracelet (Hematite (Fe₂O₃), likely polished or magnetically enhanced beads) — mineral

Hematite bead bracelet

Hematite (Fe₂O₃), likely polished or magnetically enhanced beads

Yellow Quartz (Citrine/Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine/Iron-Stained Quartz)

Silicon Dioxide (SiO2)

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

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

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

Quartz (Citrine / Golden Quartz)

Silicon Dioxide (SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

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

Yellow Quartz (Citrine alternative)

Silicon Dioxide (SiO2) with iron impurities

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

Chert (specifically Flint or Nodular Chert)

Silicon dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Likely citrine pendant (Quartz, silicon dioxide (SiO₂), probably heat-treated amethyst or smoky quartz) — gemstone

Likely citrine pendant

Quartz, silicon dioxide (SiO₂), probably heat-treated amethyst or smoky quartz

Quartzite (Metamorphic Quartzite) — metamorphic

Quartzite

Metamorphic Quartzite

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

Smoky Quartz

Crystalline Silicon Dioxide (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Green Quartzite (Metamorphic Quartzite (often colored by chromium-bearing minerals or fuchsite)) — metamorphic

Green Quartzite

Metamorphic Quartzite (often colored by chromium-bearing minerals or fuchsite)

Chert / Flint (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Flint / Chert (Microcrystalline quartz (SiO2)) — sedimentary

Flint / Chert

Microcrystalline quartz (SiO2)

Green Quartzite (Metamorphic Quartz Sandstone (SiO2)) — metamorphic

Green Quartzite

Metamorphic Quartz Sandstone (SiO2)

Milky quartz cluster (Quartz (silicon dioxide, SiO₂), likely druzy or microcrystalline quartz) — mineral

Milky quartz cluster

Quartz (silicon dioxide, SiO₂), likely druzy or microcrystalline quartz

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Tumbled chalcedony (likely moss or dendritic agate) (Microcrystalline quartz, SiO₂, with iron-oxide inclusions) — mineral

Tumbled chalcedony (likely moss or dendritic agate)

Microcrystalline quartz, SiO₂, with iron-oxide inclusions

Amethyst (Silicon dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon dioxide (SiO2) with iron impurities

Amethyst (Silicon dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon dioxide (SiO2) with iron impurities

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Rough Diamond (or Herkimer Diamond Quartz) (Diamond (C) or Quartz (SiO2)) — mineral

Rough Diamond (or Herkimer Diamond Quartz)

Diamond (C) or Quartz (SiO2)

Black Onyx or Dyed Agate Node (Cryptocrystalline Quartz (SiO2)) — mineral

Black Onyx or Dyed Agate Node

Cryptocrystalline Quartz (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz in Matrix (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz in Matrix

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Engineer Quartz/Quartzite (SiO2 (Silicon Dioxide with binders)) — Sedimentary or metamorphic-derived

Engineer Quartz/Quartzite

SiO2 (Silicon Dioxide with binders)

Sedimentary or metamorphic-derived

Banded Jasper / Chert Beach Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Jasper / Chert Beach Pebble

Microcrystalline Quartz (SiO2)

Chert (Siltstone / Flint) (SiO2 (Cryptocrystalline Quartz)) — sedimentary

Chert (Siltstone / Flint)

SiO2 (Cryptocrystalline Quartz)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Tumbled brown chalcedony (possibly carnelian or jasper) (Microcrystalline quartz, SiO₂; likely iron-stained chalcedony) — mineral

Tumbled brown chalcedony (possibly carnelian or jasper)

Microcrystalline quartz, SiO₂; likely iron-stained chalcedony

Gold-bearing Quartz (Auriferous Quartz) (Quartz (SiO2) with native Gold (Au) inclusions) — mineral

Gold-bearing Quartz (Auriferous Quartz)

Quartz (SiO2) with native Gold (Au) inclusions

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities