Rock Identifier

Category

Sedimentary (If Natural Jasper) Or Artificial (If Slag)

Browse sedimentary (if natural jasper) or artificial (if slag) specimens identified by the Rock Identifier community.

Learn about Sedimentary (If Natural Jasper) Or Artificial (If Slag) in the encyclopedia

Kambaba Jasper

Sea Sediment Jasper

Asphalt Rock

Chert

Tripolite

Diamond

Brecciated Jasper

Brecciated Jasper

Agate (Polished Slice) (Banded Chalcedony (SiO2)) — mineral

Agate (Polished Slice)

Banded Chalcedony (SiO2)

Tumbled jasper (likely picture jasper or iron-rich jasper) (Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides) — sedimentary

Tumbled jasper (likely picture jasper or iron-rich jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides

Smoky Quartz (SiO2 (Silicon Dioxide)) — mineral

Smoky Quartz

SiO2 (Silicon Dioxide)

Dyed Pink Dragon Vein Agate (Silicon Dioxide (SiO2) with artificial dye additives) — mineral

Dyed Pink Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial dye additives

Dyed Agate (Chalcedony (SiO2)) — gemstone

Dyed Agate

Chalcedony (SiO2)

Blue Goldstone (Synthetic Avanturine Glass (or Aventurine Glass)) — Synthetic Glass

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Synthetic Glass

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate) (N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)) — Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)

Polychrome Jasper (Silicon Dioxide (SiO2) with iron and other mineral inclusions) — sedimentary

Polychrome Jasper

Silicon Dioxide (SiO2) with iron and other mineral inclusions

Red Jade (Dyed Quartzite) (Silicon Dioxide (SiO2) - variety Quartzite) — metamorphic

Red Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - variety Quartzite

Concrete Fragment (Artificial Conglomerate (Cement and Aggregate)) — sedimentary

Concrete Fragment

Artificial Conglomerate (Cement and Aggregate)

Cullet Glass (Slag) (Amorphous Silicon Dioxide (Man-made)) — Mineraloid

Cullet Glass (Slag)

Amorphous Silicon Dioxide (Man-made)

Pink Dyed Agate Geode Slice (Cryptocrystalline Quartz (SiO2)) — mineral

Pink Dyed Agate Geode Slice

Cryptocrystalline Quartz (SiO2)

Dyed Dalmatian Jasper (Dalmatian Stone) (Perthitic Feldspar with Arfvedsonite inclusions) — igneous

Dyed Dalmatian Jasper (Dalmatian Stone)

Perthitic Feldspar with Arfvedsonite inclusions

Obsidian (Volcanic glass (silica-rich rhyolitic melt; primarily SiO₂)) — igneous

Obsidian

Volcanic glass (silica-rich rhyolitic melt; primarily SiO₂)

Blue chalcedony (likely dyed or coated) (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Blue chalcedony (likely dyed or coated)

Chalcedony, microcrystalline quartz (SiO₂)

Mystic Topaz (Al2SiO4(F,OH)2 (Coated)) — gemstone

Mystic Topaz

Al2SiO4(F,OH)2 (Coated)

Trilobite Fossil (Flexicalymene) (Flexicalymene ouzregui) — sedimentary

Trilobite Fossil (Flexicalymene)

Flexicalymene ouzregui

Blue Obsidian (Volcanic Glass (SiO2 with inclusions)) — igneous

Blue Obsidian

Volcanic Glass (SiO2 with inclusions)

Blue Quartzite (Dyed Quartzite) (Quartzite (SiO2 with dye enhancements)) — metamorphic

Blue Quartzite (Dyed Quartzite)

Quartzite (SiO2 with dye enhancements)

Green Glass Slag (Amorphous Silicon Dioxide (SiO2) with metal oxide impurities) — mineraloid (man-made)

Green Glass Slag

Amorphous Silicon Dioxide (SiO2) with metal oxide impurities

mineraloid (man-made)

Pink Quartz (likely dyed) (Silicon Dioxide (SiO2)) — mineral

Pink Quartz (likely dyed)

Silicon Dioxide (SiO2)

Dark river pebble, likely basalt or fine-grained volcanic rock (Basalt (probable); mostly plagioclase and pyroxene, with possible magnetite) — igneous

Dark river pebble, likely basalt or fine-grained volcanic rock

Basalt (probable); mostly plagioclase and pyroxene, with possible magnetite

Jasper Breccia (Brecciated Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)) — sedimentary

Jasper Breccia

Brecciated Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Dyed Agate (Silicon Dioxide (SiO2) - Chalcedony variety) — sedimentary

Dyed Agate

Silicon Dioxide (SiO2) - Chalcedony variety

Heat-Treated Citrine (Quartz (Silicon Dioxide, SiO2)) — mineral

Heat-Treated Citrine

Quartz (Silicon Dioxide, SiO2)

Crackle Agate / Dyed Agate (Agate (Silicon dioxide / SiO2)) — mineral

Crackle Agate / Dyed Agate

Agate (Silicon dioxide / SiO2)

Goldstone (blue-goldstone–style glass) beads (Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral) — mineral

Goldstone (blue-goldstone–style glass) beads

Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral

Tumbled smoky quartz with iron-stained inclusions (Quartz (SiO₂), likely smoky quartz variety) — mineral

Tumbled smoky quartz with iron-stained inclusions

Quartz (SiO₂), likely smoky quartz variety

Cullet (Slag Glass) (Amorphous Silica (SiO2) with various metal oxide colorants) — mineraloid / anthropogenic

Cullet (Slag Glass)

Amorphous Silica (SiO2) with various metal oxide colorants

mineraloid / anthropogenic

Native copper nugget (Native copper (Cu)) — mineral

Native copper nugget

Native copper (Cu)

Green cabochon gemstone, likely aventurine or dyed chalcedony (Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony) — gemstone

Green cabochon gemstone, likely aventurine or dyed chalcedony

Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Blue Dyed Agate (Chalcedony (cryptocrystalline variety of Quartz), SiO2) — mineral

Blue Dyed Agate

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Polished dark pebble, likely basalt (Basalt, chiefly plagioclase feldspar and pyroxene, with possible olivine or magnetite) — igneous

Polished dark pebble, likely basalt

Basalt, chiefly plagioclase feldspar and pyroxene, with possible olivine or magnetite

Purple Agate (Dyed Chalcedony) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Purple Agate (Dyed Chalcedony)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Peacock Ore (Bornite or Chalcopyrite) (Bornite (Cu₅FeS₄) or iridescent Chalcopyrite (CuFeS₂)) — mineral

Peacock Ore (Bornite or Chalcopyrite)

Bornite (Cu₅FeS₄) or iridescent Chalcopyrite (CuFeS₂)

Agate (Dyed Blue) (SiO2 (Silicon Dioxide)) — Mineral (Chalcedony/Quartz variety)

Agate (Dyed Blue)

SiO2 (Silicon Dioxide)

Mineral (Chalcedony/Quartz variety)

Picture Jasper (Silicon Dioxide (SiO2)) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2)

Cullet Glass (Industrial Slag Glass) (Amorphous Silica (SiO2) with metallic oxide impurities) — Man-made byproduct (often mistaken for Obsidian or Emerald)

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Man-made byproduct (often mistaken for Obsidian or Emerald)

Dyed Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Dyed Chalcedony (Agate)

Silicon Dioxide (SiO2)

Water-worn brown chert or jasper pebble (Microcrystalline quartz (SiO₂), likely ferruginous chert/jasper) — sedimentary

Water-worn brown chert or jasper pebble

Microcrystalline quartz (SiO₂), likely ferruginous chert/jasper

Asphalt aggregate (crushed stone in bitumen) (Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen) — sedimentary

Asphalt aggregate (crushed stone in bitumen)

Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen