Rock Identifier

Category

Mineraloid (Man Made Origin)

Browse mineraloid (man made origin) specimens identified by the Rock Identifier community.

Learn about Mineraloid (Man Made Origin) in the encyclopedia

Opalite

Shungite

Oregon Opal

Map Jasper

Goldstone

Oregon Sunstone

Oregon Sunstone

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Zincite

Quartzite Sandstone

Quartzite Sandstone

Marl

Emerald (Beryl) (Be₃Al₂Si₆O₁₈ (Chromium/Vanadium-bearing Beryl)) — gemstone

Emerald (Beryl)

Be₃Al₂Si₆O₁₈ (Chromium/Vanadium-bearing Beryl)

Marble (Metamorphic Limestone (Calcite, CaCO3)) — metamorphic

Marble

Metamorphic Limestone (Calcite, CaCO3)

Tektite (Tektite (meteoritic glass)) — meteorite

Tektite

Tektite (meteoritic glass)

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

Larimar and Fossil Coral (Pectolite (NaCa2Si3O8(OH)) and Hexagonaria/Petoskey Stone) — mineral and sedimentary

Larimar and Fossil Coral

Pectolite (NaCa2Si3O8(OH)) and Hexagonaria/Petoskey Stone

mineral and sedimentary

Titanium Aura Quartz (Aura Quartz) (Titanium-coated Silicon Dioxide (SiO2)) — mineral

Titanium Aura Quartz (Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2)

Tumbled mahogany obsidian (Volcanic glass; primarily SiO₂ with iron-oxide-rich brown inclusions) — igneous

Tumbled mahogany obsidian

Volcanic glass; primarily SiO₂ with iron-oxide-rich brown inclusions

Black Obsidian (Amorphous volcanic glass (SiO2)) — igneous

Black Obsidian

Amorphous volcanic glass (SiO2)

Obsidian (specifically Mahogany Obsidian) (Volcanic glass (high silica content, SiO2)) — igneous

Obsidian (specifically Mahogany Obsidian)

Volcanic glass (high silica content, SiO2)

Obsidian with Mahogany Phasing (Volcanic Glass (SiO2 + Fe2O3)) — igneous

Obsidian with Mahogany Phasing

Volcanic Glass (SiO2 + Fe2O3)

Obsidian (Obsidian (Volcanic Glass; SiO2 content > 70%)) — igneous

Obsidian

Obsidian (Volcanic Glass; SiO2 content > 70%)

Mahogany Obsidian (Volcanic Glass (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic Glass (SiO2 + Fe2O3)

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

Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Pink Coral (Corallium rubrum (or related species, composed of calcium carbonate)) — gemstone

Pink Coral

Corallium rubrum (or related species, composed of calcium carbonate)

Mahogany Obsidian (Volcanic glass containing Hematite or Magnetite (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic glass containing Hematite or Magnetite (SiO2 + Fe2O3)

Carbonaceous Chondrite (CV3 type) (Carbonaceous Chondrite (CV3 group)) — meteorite

Carbonaceous Chondrite (CV3 type)

Carbonaceous Chondrite (CV3 group)

Possible basaltic rock or meteorite candidate (Likely vesicular basalt; meteorite identification cannot be confirmed visually) — igneous

Possible basaltic rock or meteorite candidate

Likely vesicular basalt; meteorite identification cannot be confirmed visually

Raw Emerald (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Raw Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Jasper with Chert (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper with Chert

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Diamond (or Simulant) (Carbon (C) or Cubic Zirconia (ZrO2)) — gemstone

Diamond (or Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Diamond (Native Carbon (C)) — gemstone

Diamond

Native Carbon (C)

Diamond (in a jewelry setting) (Carbon (C)) — mineral

Diamond (in a jewelry setting)

Carbon (C)

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Orbicular Jasper (Eye Jasper / Kambaba-like pattern) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Orbicular Jasper (Eye Jasper / Kambaba-like pattern)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Fluorite (Green Fluorite) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Green Fluorite)

Calcium Fluoride (CaF2)

Quartz (Tumbled/Water-worn) (Silicon Dioxide (SiO2)) — mineral

Quartz (Tumbled/Water-worn)

Silicon Dioxide (SiO2)

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Iron Slag (Ferrous Slag (Silicate/Oxide mixture)) — industrial byproduct (anthropogenic)

Iron Slag

Ferrous Slag (Silicate/Oxide mixture)

industrial byproduct (anthropogenic)

Granodiorite (Phaneritic Plutonic Rock (Granodiorite)) — igneous

Granodiorite

Phaneritic Plutonic Rock (Granodiorite)

Emerald in Matrix (Beryl (Be3Al2Si6O18)) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Cinnabar (Mercury(II) sulfide (HgS)) — mineral

Cinnabar

Mercury(II) sulfide (HgS)

Amber (Succinite (fossilized resin)) — mineral

Amber

Succinite (fossilized resin)

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

Chert / Flint

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Granite Cobble (Granite (Porphyritic/Coarse-grained)) — igneous

Granite Cobble

Granite (Porphyritic/Coarse-grained)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Granite (Granite (Alkali-feldspar granite)) — igneous

Granite

Granite (Alkali-feldspar granite)

Diamond (Diamond (Pure Carbon, C)) — mineral

Diamond

Diamond (Pure Carbon, C)

Pink Granite (Felsic Intrusive Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)) — igneous

Pink Granite

Felsic Intrusive Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Pink Coral (Corallium rubrum (Calcium Carbonate, CaCO3)) — mineral

Pink Coral

Corallium rubrum (Calcium Carbonate, CaCO3)

Emerald (Rough) (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — gemstone

Emerald (Rough)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Emerald crystal in host rock (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — gemstone

Emerald crystal in host rock

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)