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

Quartzite Beach Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Beach Pebble

Quartzite (primarily SiO2)

Raw emerald-bearing beryl (probable) (Beryl, Be₃Al₂Si₆O₁₈; green color from trace chromium and/or vanadium) — mineral

Raw emerald-bearing beryl (probable)

Beryl, Be₃Al₂Si₆O₁₈; green color from trace chromium and/or vanadium

Pink Quartz / Sea Glass (Silicon Dioxide (SiO2)) — mineral

Pink Quartz / Sea Glass

Silicon Dioxide (SiO2)

Citrine (likely Heat-Treated Amethyst) (Silicon Dioxide (SiO2)) — mineral

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Amethyst geode slices (Amethyst, purple quartz (SiO₂)) — mineral

Amethyst geode slices

Amethyst, purple quartz (SiO₂)

Raw Diamond (Diamond (C)) — mineral

Raw Diamond

Diamond (C)

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

Agate

Agate (Silicon Dioxide, SiO2)

Banded Black Agate (Silicon Dioxide (SiO2)) — mineral

Banded Black Agate

Silicon Dioxide (SiO2)

Yellow Sapphire (Corundum (Al2O3) with iron impurities) — mineral

Yellow Sapphire

Corundum (Al2O3) with iron impurities

Amethyst Cluster (Silicon Dioxide (Quartz variety: Amethyst) - SiO2) — mineral

Amethyst Cluster

Silicon Dioxide (Quartz variety: Amethyst) - SiO2

Coquina (Coquina (Bioclastic Limestone)) — sedimentary

Coquina

Coquina (Bioclastic Limestone)

Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — mineral

Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Milky quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Mohave Turquoise (Composite/Stabilized) (Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions) — mineral

Mohave Turquoise (Composite/Stabilized)

Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions

Carborundum (Silicon Carbide (SiC)) — mineral

Carborundum

Silicon Carbide (SiC)

Iron Ore / Hematite / Ironstone Nodule (Hematite / Goethite (Fe2O3 / FeO(OH))) — sedimentary

Iron Ore / Hematite / Ironstone Nodule

Hematite / Goethite (Fe2O3 / FeO(OH))

Tumbled quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled quartz pebble

Quartz (silicon dioxide, SiO₂)

Tumbled quartzite or quartz-rich stone (Quartzite; predominantly microcrystalline quartz (SiO₂)) — metamorphic

Tumbled quartzite or quartz-rich stone

Quartzite; predominantly microcrystalline quartz (SiO₂)

Smoky Quartz with Axinite (SiO2 (Quartz) with (Ca,Mn,Fe,Mg)3Al2BSi4O15(OH) (Axinite)) — mineral

Smoky Quartz with Axinite

SiO2 (Quartz) with (Ca,Mn,Fe,Mg)3Al2BSi4O15(OH) (Axinite)

Blue Impression Jasper beads (Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions) — gemstone

Blue Impression Jasper beads

Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions

Black Onyx (Silicon Dioxide (SiO2)) — mineral

Black Onyx

Silicon Dioxide (SiO2)

Sea Glass (Amorphous Silicon Dioxide (Man-made glass weathered by nature)) — mineral

Sea Glass

Amorphous Silicon Dioxide (Man-made glass weathered by nature)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Ruby (Corundum (Al2O3 with chromium trace elements)) — gemstone

Ruby

Corundum (Al2O3 with chromium trace elements)

Aventurine (Aventurine Quartz (SiO2 with inclusions of Fuchsite)) — metamorphic

Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Yellow Jade (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)) — gemstone

Yellow Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Clear Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Worry Stone (Weathered Quartzite or Sandstone) — sedimentary

Worry Stone

Weathered Quartzite or Sandstone

White quartz-rich pebble (Quartz (SiO₂), possibly milky quartz or quartzite) — mineral

White quartz-rich pebble

Quartz (SiO₂), possibly milky quartz or quartzite

Blue Cat's Eye Quartz (Heated/Dyed) (Silicon Dioxide (SiO2) with fibrous inclusions) — mineral

Blue Cat's Eye Quartz (Heated/Dyed)

Silicon Dioxide (SiO2) with fibrous inclusions

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Dyed or coated quartz geode (Quartz geode; silicon dioxide (SiO₂), likely artificially color-enhanced) — mineral

Dyed or coated quartz geode

Quartz geode; silicon dioxide (SiO₂), likely artificially color-enhanced

Cullet Glass / Slag Glass (Amorphous silica glass) — man-made glass / industrial byproduct

Cullet Glass / Slag Glass

Amorphous silica glass

man-made glass / industrial byproduct

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Amethyst (Silicon dioxide (SiO2)) — mineral

Amethyst

Silicon dioxide (SiO2)

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

Carnelian/chalcedony rough

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

Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg,Fe)5Si8O22(OH)2

Dyed Pink Agate (or Dyed Quartzite) (Silicon dioxide (SiO2) with artificial pigment) — sedimentary

Dyed Pink Agate (or Dyed Quartzite)

Silicon dioxide (SiO2) with artificial pigment

Black Obsidian (Obsidian (Volcanic Glass, SiO2 + impurities)) — igneous

Black Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Aura Quartz (Pink/Magenta Aura Quartz) (Silicon Dioxide (SiO2) treated with vapor-deposited precious metals) — mineral

Aura Quartz (Pink/Magenta Aura Quartz)

Silicon Dioxide (SiO2) treated with vapor-deposited precious metals