Rock Identifier

Category

Synthetic (Not A Natural Rock)

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

Learn about Synthetic (Not A Natural Rock) in the encyclopedia

Asphalt Rock

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Chalk

Zircon

Obsidian

Kimberlite

Emerald in Matrix

Emerald in Matrix

Tripolite

Guano

Halite

Aquamarine Matrix

Aquamarine Matrix

Rock Salt

Pearl (Calcium Carbonate (CaCO3) in the form of Aragonite) — mineral

Pearl

Calcium Carbonate (CaCO3) in the form of Aragonite

Amethyst Cluster Pendant (Silicon Dioxide (SiO2) - Quartz variety Amethyst) — gemstone

Amethyst Cluster Pendant

Silicon Dioxide (SiO2) - Quartz variety Amethyst

Diamond (C (Pure Carbon)) — gemstone

Diamond

C (Pure Carbon)

Dyed Howlite (Borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Dyed Howlite

Borosilicate hydroxide (Ca2B5SiO9(OH)5)

Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

Pearl (Nacre (Aragonite and Conchiolin), CaCO3) — mineral

Pearl

Nacre (Aragonite and Conchiolin), CaCO3

Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

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

Diamond (Cut and Faceted)

Carbon (C)

Polished brecciated jasper pebble (Microcrystalline quartz (SiO₂), with iron-oxide inclusions) — mineral

Polished brecciated jasper pebble

Microcrystalline quartz (SiO₂), with iron-oxide inclusions

Emerald (Beryl (Be3Al2Si6O18 with chromium and vanadium impurities)) — gemstone

Emerald

Beryl (Be3Al2Si6O18 with chromium and vanadium impurities)

Agate (Silicon Dioxide (SiO2) - Chalcedony Variety) — sedimentary

Agate

Silicon Dioxide (SiO2) - Chalcedony Variety

Gold-bearing Quartz (Native Gold (Au) in Quartz (SiO2) matrix) — mineral

Gold-bearing Quartz

Native Gold (Au) in Quartz (SiO2) matrix

Rose quartz heart (Quartz, silicon dioxide (SiO₂), pink variety) — mineral

Rose quartz heart

Quartz, silicon dioxide (SiO₂), pink variety

Quartzite (Quartzite (chiefly SiO2)) — metamorphic

Quartzite

Quartzite (chiefly SiO2)

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Silver Nuggets (Natural or Cast) (Native Silver (Ag)) — mineral

Silver Nuggets (Natural or Cast)

Native Silver (Ag)

Milky Quartz with Chlorite/Epidote (Silicon Dioxide (SiO2) with phyllosilicate or sorosilicate inclusions) — mineral

Milky Quartz with Chlorite/Epidote

Silicon Dioxide (SiO2) with phyllosilicate or sorosilicate inclusions

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Amethyst (Silicon Dioxide (SiO2)) — mineral

Amethyst

Silicon Dioxide (SiO2)

Aluminum Slag (Anthropogenic Aluminum (Al)) — mineral

Aluminum Slag

Anthropogenic Aluminum (Al)

Rainbow Quartz (Dyed/Coated Quartz) (Silicon Dioxide (SiO2) with artificial color enhancement) — gemstone

Rainbow Quartz (Dyed/Coated Quartz)

Silicon Dioxide (SiO2) with artificial color enhancement

Diamond (Native Carbon (C)) — gemstone

Diamond

Native Carbon (C)

Citrine (Silicon Dioxide (SiO2) with Fe3+ impurities) — mineral

Citrine

Silicon Dioxide (SiO2) with Fe3+ impurities

Diamond in Kimberlite (Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)) — igneous

Diamond in Kimberlite

Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)

Mixed Crushed Stone (Aggregate (varied mineral composition)) — igneous and sedimentary mixture

Mixed Crushed Stone

Aggregate (varied mineral composition)

igneous and sedimentary mixture

Smoky Quartz / Chalcedony (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz / Chalcedony

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Black Onyx (Chalcedony (SiO2)) — gemstone

Black Onyx

Chalcedony (SiO2)

Copper Nugget (Native Copper (Cu)) — mineral

Copper Nugget

Native Copper (Cu)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Tumbled blue sodalite (probable) (Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂) — mineral

Tumbled blue sodalite (probable)

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

Mica Schist with Quartz (Mica Schist (principally Muscovite and Biotite with Quartz veins)) — metamorphic

Mica Schist with Quartz

Mica Schist (principally Muscovite and Biotite with Quartz veins)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Ruby Zoisite (Anyolite (Calcium aluminium silicate with Chromium/Corundum inclusions)) — metamorphic

Ruby Zoisite

Anyolite (Calcium aluminium silicate with Chromium/Corundum inclusions)

Blue Topaz (Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)) — gemstone

Blue Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

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

Amethyst

Silicon dioxide with iron impurities (SiO2)

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

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)