Rock Identifier

Category

Organic (If Resin) Or Synthetic (If Glass); Simulating Sedimentary Or Metamorphic (For Natural Stones)

Browse organic (if resin) or synthetic (if glass); simulating sedimentary or metamorphic (for natural stones) specimens identified by the Rock Identifier community.

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

Banded Chert

Banded Microcrystalline Quartz (SiO2)

River Pebble (likely Quartzite or Chert) (Silicon Dioxide (SiO2)) — metamorphic or sedimentary

River Pebble (likely Quartzite or Chert)

Silicon Dioxide (SiO2)

metamorphic or sedimentary

Chert (Iron-stained) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Black Sapphire (Basaltic Blue Sapphire) (Corundum (Al2O3)) — mineral

Black Sapphire (Basaltic Blue Sapphire)

Corundum (Al2O3)

Chert (Jasper/Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Chert Nodules in Sedimentary Rock (Microcrystalline Quartz (SiO2) within Clastic Matrix) — sedimentary

Chert Nodules in Sedimentary Rock

Microcrystalline Quartz (SiO2) within Clastic Matrix

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Tumbled green aventurine (likely) (Quartz (SiO₂) with fuchsite or other green mica inclusions) — mineral

Tumbled green aventurine (likely)

Quartz (SiO₂) with fuchsite or other green mica inclusions

Chert Nodule (with Geode cavity) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert Nodule (with Geode cavity)

Cryptocrystalline Quartz (SiO2)

Chert (Flint) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Chert / Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Citrine (Silicon Dioxide (SiO2) with iron impurities) — Mineral

Citrine

Silicon Dioxide (SiO2) with iron impurities

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

Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert Nodule (Flint) (Cryptocrystalline quartz (SiO2)) — sedimentary

Chert Nodule (Flint)

Cryptocrystalline quartz (SiO2)

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

Jasper (Jasper (Cryptocrystalline variety of Quartz, SiO2)) — sedimentary

Jasper

Jasper (Cryptocrystalline variety of Quartz, SiO2)

Banded Chert (Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Chert (Flint)

Cryptocrystalline Quartz (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Chert (often colloquially called Flint) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (often colloquially called Flint)

Chert (Microcrystalline Quartz, SiO2)

Chert (specifically Flint or Jasper variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Microcrystalline Quartz (SiO2)

Chert Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble

Microcrystalline Quartz (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Green Aventurine (Aventurine (Silicon Dioxide with Fuchsite inclusions - SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Green Aventurine

Aventurine (Silicon Dioxide with Fuchsite inclusions - SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — Mineral (Variety of Quartz)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Mineral (Variety of Quartz)

Green Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Green Chert (Jasper)

Silicon Dioxide (SiO2)

Chert (Chert Nodule in Limestone) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chert Nodule in Limestone)

Microcrystalline Quartz (SiO2)

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Jasper (Jasper (Silicon Dioxide, SiO2 with iron oxide inclusions)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2 with iron oxide inclusions)

Magnetic Hematite (Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)) — Mineral

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Emerald (Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium) — Mineral (Gemstone variety of Beryl)

Emerald

Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium

Mineral (Gemstone variety of Beryl)

Green Quartzite Pebble (Quartzite (SiO2 with chlorite/fuchsite inclusions)) — metamorphic

Green Quartzite Pebble

Quartzite (SiO2 with chlorite/fuchsite inclusions)

Fossiliferous Limestone (Fossiliferous Carbonate Rock (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Carbonate Rock (CaCO3)

Sandstone (Quartzite-rich Pebble) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich Pebble)

Arenite (primarily SiO2)

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

Red Jasper with Quartz (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper with Quartz

Microcrystalline Quartz (SiO2)

Small pale mineral fragment (Unidentified; possibly quartz, calcite, or feldspar) — mineral

Small pale mineral fragment

Unidentified; possibly quartz, calcite, or feldspar

Red Sandstone (Arenite (SiO2 with Iron Oxide impurities)) — sedimentary

Red Sandstone

Arenite (SiO2 with Iron Oxide impurities)

Ruby (Raw Corundum) (Alumina (Al2O3) with Chromium traces) — gemstone

Ruby (Raw Corundum)

Alumina (Al2O3) with Chromium traces

Yellow Quartz (SiO2 (Silicon Dioxide)) — mineral

Yellow Quartz

SiO2 (Silicon Dioxide)