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

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

Blue Agate (Dyed Chalcedony)

Silicon Dioxide (SiO2)

Dyed Agate (SiO2 (Silicon Dioxide)) — Mineral

Dyed Agate

SiO2 (Silicon Dioxide)

Dyed Crackle Quartz (Silicon Dioxide (SiO2) with synthetic dye) — mineral

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Black obsidian (probable) (Volcanic glass; primarily SiO₂-rich rhyolitic composition) — igneous

Black obsidian (probable)

Volcanic glass; primarily SiO₂-rich rhyolitic composition

Yellow Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Possible tektite or iron-rich slag-like natural specimen (Uncertain; possibly natural glass (tektite) or magnetite-rich rock) — mineral

Possible tektite or iron-rich slag-like natural specimen

Uncertain; possibly natural glass (tektite) or magnetite-rich rock

Ferruginous Slag (Iron Smelting Byproduct) (Fused Silicate Scoria (Amorphous mixture of FeO, SiO2, and CaO)) — Antropogenic Glass / Mineraloid

Ferruginous Slag (Iron Smelting Byproduct)

Fused Silicate Scoria (Amorphous mixture of FeO, SiO2, and CaO)

Antropogenic Glass / Mineraloid

Citrine (Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Citrine (Iron-stained Quartz)

Silicon Dioxide (SiO2)

Black Agate (Chalcedony (SiO2)) — mineral

Black Agate

Chalcedony (SiO2)

Snowflake obsidian cabochon (Obsidian (volcanic glass), SiO₂-rich; white areas are cristobalite/spherulitic devitrification) — igneous

Snowflake obsidian cabochon

Obsidian (volcanic glass), SiO₂-rich; white areas are cristobalite/spherulitic devitrification

Smoky Quartz (Smoky Quartz (SiO2)) — mineral

Smoky Quartz

Smoky Quartz (SiO2)

Cullet (Slag Glass) (Amorphous Silica (Industrial byproduct)) — mineraloid

Cullet (Slag Glass)

Amorphous Silica (Industrial byproduct)

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

Green Slag Glass (Cullet (Amorphous Silicon Dioxide with impurities)) — Man-made rock-like material

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Man-made rock-like material

Dyed Agate Slice (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Dyed Agate Slice

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Jasper and Agate (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper and Agate

Microcrystalline Quartz (SiO2)

Slag (Industrial Glassy Byproduct) (Ferro-silicate Slag) — Anthropogenic / Non-Natural

Slag (Industrial Glassy Byproduct)

Ferro-silicate Slag

Anthropogenic / Non-Natural

Heat-Treated Citrine (Silicon Dioxide (SiO2) with iron impurities) — mineral

Heat-Treated Citrine

Silicon Dioxide (SiO2) with iron impurities

Brecciated Jasper (SiO2 (Silicon Dioxide)) — sedimentary

Brecciated Jasper

SiO2 (Silicon Dioxide)

Uncertain polymict breccia or altered volcanic rock (Likely hydrothermally altered volcanic breccia; exact mineral identification requires testing) — igneous

Uncertain polymict breccia or altered volcanic rock

Likely hydrothermally altered volcanic breccia; exact mineral identification requires testing

Heat-Treated Amethyst (Commercial Citrine) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Heat-Treated Amethyst (Commercial Citrine)

Silicon Dioxide (SiO2) with iron impurities

Green glassy slag or manufactured glass bead (Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral) — mineral

Green glassy slag or manufactured glass bead

Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral

Red Jasper (Beach Pebble) (Jasper (Cryptocrystalline Quartz, SiO2)) — mineral

Red Jasper (Beach Pebble)

Jasper (Cryptocrystalline Quartz, SiO2)

Dyed Blue Quartzite (SiO2 (Silicon Dioxide) with artificial colorants) — metamorphic

Dyed Blue Quartzite

SiO2 (Silicon Dioxide) with artificial colorants

Likely tumbled dark volcanic rock (Probably basalt or basaltic andesite; exact identification is uncertain from the image) — igneous

Likely tumbled dark volcanic rock

Probably basalt or basaltic andesite; exact identification is uncertain from the image

Pet Rock (Quartzite/Sandstone River Rock) (Silicon Dioxide (SiO2) mixture) — sedimentary

Pet Rock (Quartzite/Sandstone River Rock)

Silicon Dioxide (SiO2) mixture

Aura Quartz (Coated Quartz) (Silicon Dioxide (SiO2) coated with vaporized metals) — mineral

Aura Quartz (Coated Quartz)

Silicon Dioxide (SiO2) coated with vaporized metals

Dalmation Stone (Dalmation Jasper) (Peralkaline Rock with Feldspar and Arfvedsonite) — igneous

Dalmation Stone (Dalmation Jasper)

Peralkaline Rock with Feldspar and Arfvedsonite

Dyed Agate (Microcrystalline Quartz (SiO2) with artificial pigment) — sedimentary

Dyed Agate

Microcrystalline Quartz (SiO2) with artificial pigment

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

Dyed Howlite

Borosilicate hydroxide (Ca2B5SiO9(OH)5)

Tumbled quartz crystal (likely smoky or iron-stained quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Tumbled quartz crystal (likely smoky or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Smoky quartz (Quartz, silicon dioxide (SiO₂), brown to gray variety) — mineral

Smoky quartz

Quartz, silicon dioxide (SiO₂), brown to gray variety

Smoky Quartz (SiO2 (Silicon Dioxide with aluminum impurities)) — mineral

Smoky Quartz

SiO2 (Silicon Dioxide with aluminum impurities)

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

Jasper

Silicon Dioxide (SiO2) with impurities

Blue Agate (likely dyed) (Silicon Dioxide (SiO2)) — mineral

Blue Agate (likely dyed)

Silicon Dioxide (SiO2)

Heat-Treated Citrine (Amethyst) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Heat-Treated Citrine (Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Blue Slag Glass (Amorphous Silica (Byproduct of smelting)) — Antropogenic (Man-made)

Blue Slag Glass

Amorphous Silica (Byproduct of smelting)

Antropogenic (Man-made)

Dyed Blue Agate Druzy Pendant (Quartz / Chalcedony (SiO2) with artificial color treatment) — gemstone

Dyed Blue Agate Druzy Pendant

Quartz / Chalcedony (SiO2) with artificial color treatment

Bornite (Peacock Ore) (Bornite (Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Dyed mineral cluster, likely calcite or aragonite (Calcite (CaCO₃) or aragonite (CaCO₃), artificially color-enhanced) — mineral

Dyed mineral cluster, likely calcite or aragonite

Calcite (CaCO₃) or aragonite (CaCO₃), artificially color-enhanced

Chert (Jasper variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)