Rock Identifier

Category

Not A Natural Rock

Browse not a natural rock specimens identified by the Rock Identifier community.

Learn about Not A Natural Rock in the encyclopedia

Asphalt Rock

Rock Gypsum

Coral Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Chalk

Obsidian

Baddeleyite

Cataclasite

Anorthosite

Kimberlite

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

Smoky Quartz

SiO2 (Silicon Dioxide with aluminum impurities)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Diorite (Dalmatian Stone) (Phaneritic Plutonic Diorite) — igneous

Diorite (Dalmatian Stone)

Phaneritic Plutonic Diorite

Green aventurine cabochon (likely) (Quartzite/aventurine quartz, predominantly SiO₂ with possible fuchsite mica) — gemstone

Green aventurine cabochon (likely)

Quartzite/aventurine quartz, predominantly SiO₂ with possible fuchsite mica

Smurf Rock (Fictional Interpretation) (Cyanus Anthropomorphicus (Geologic Simulation)) — Artificial/Fantasy Object

Smurf Rock (Fictional Interpretation)

Cyanus Anthropomorphicus (Geologic Simulation)

Artificial/Fantasy Object

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Limonite Geode / Ironstone Nodule (Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite Geode / Ironstone Nodule

Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)

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

Yellow Quartz Pebble (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Dyed Howlite (simulating Lavender/Purple Jade or Charoite) (Howlite: Ca2B5SiO9(OH)5 (when natural)) — Mineral

Dyed Howlite (simulating Lavender/Purple Jade or Charoite)

Howlite: Ca2B5SiO9(OH)5 (when natural)

Engineered Quartz (Silicon dioxide composite) — manufactured stone

Engineered Quartz

Silicon dioxide composite

manufactured stone

Iron-rich weathered rock or limonite/goethite nodule (Limonite (mixture dominated by goethite, FeO(OH)·nH₂O), possibly with quartz or clay) — mineral

Iron-rich weathered rock or limonite/goethite nodule

Limonite (mixture dominated by goethite, FeO(OH)·nH₂O), possibly with quartz or clay

Anthropogenic Heat Source (Electronic/Industrial Interface) (Thermal IR emission (Electronic infrastructure)) — not a rock or mineral

Anthropogenic Heat Source (Electronic/Industrial Interface)

Thermal IR emission (Electronic infrastructure)

not a rock or mineral

Agate (various color varieties) (SiO₂ (Silicon Dioxide)) — Mineral (specifically a variety of Chalcedony, which is a microcrystalline quartz)

Agate (various color varieties)

SiO₂ (Silicon Dioxide)

Mineral (specifically a variety of Chalcedony, which is a microcrystalline quartz)

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

Citrine (Citrine (Silicon Dioxide, SiO2)) — mineral

Citrine

Citrine (Silicon Dioxide, SiO2)

Likely yellow chalcedony or citrine cabochon (Cryptocrystalline quartz (chalcedony), SiO₂; alternatively quartz variety citrine) — gemstone

Likely yellow chalcedony or citrine cabochon

Cryptocrystalline quartz (chalcedony), SiO₂; alternatively quartz variety citrine

Pumice (Pumice) — igneous

Pumice

Pumice

Yellow Topaz (Imperial/Golden Topaz) (Topaz - Al2SiO4(F,OH)2) — gemstone

Yellow Topaz (Imperial/Golden Topaz)

Topaz - Al2SiO4(F,OH)2

Carved Stone Turtle (Mixed stone carving) — carved stone

Carved Stone Turtle

Mixed stone carving

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

Yellow Quartz / Quartz Pebble

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Smoky Quartz in Matrix

Silicon Dioxide (SiO2)

Smoky Quartz (Smoky Quartz (SiO2)) — mineral

Smoky Quartz

Smoky Quartz (SiO2)

Quartz (Variety: Citrine or Tumbled Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Variety: Citrine or Tumbled Chalcedony)

Silicon Dioxide (SiO2)

Diamond (or Simulant) (Carbon (C) or various simulants (e.g., Cubic Zirconia)) — gemstone

Diamond (or Simulant)

Carbon (C) or various simulants (e.g., Cubic Zirconia)

Orange Quartzite (Quartzite (primarily SiO2 with Hematite impurities)) — metamorphic

Orange Quartzite

Quartzite (primarily SiO2 with Hematite impurities)

Tumbled banded calcite (often sold as “onyx” or green onyx) (Calcite, CaCO₃; commonly banded cave/travertine calcite) — mineral

Tumbled banded calcite (often sold as “onyx” or green onyx)

Calcite, CaCO₃; commonly banded cave/travertine calcite

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Basalt with Weathered Surface (Basalt) — Igneous

Basalt with Weathered Surface

Basalt

Purple Agate (Dyed Chalcedony) (SiO2 (Silicon Dioxide) with organic dyes) — mineral

Purple Agate (Dyed Chalcedony)

SiO2 (Silicon Dioxide) with organic dyes

Glacially transported granite and gneiss boulders (Granite (quartz–feldspar–mica); banded specimens likely gneiss) — igneous and metamorphic

Glacially transported granite and gneiss boulders

Granite (quartz–feldspar–mica); banded specimens likely gneiss

igneous and metamorphic

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

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

Diamond (Faceted)

Carbon (C)

Diamond (or Diamond Simulant) (Carbon (C)) — mineral

Diamond (or Diamond Simulant)

Carbon (C)