Rock Identifier

Category

Anthropogenic (Man Made Artifact)

Browse anthropogenic (man made artifact) specimens identified by the Rock Identifier community.

Learn about Anthropogenic (Man Made Artifact) in the encyclopedia

Opalite

Map Jasper

Goldstone

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Zincite

Marl

Coquina

Dunite

Dalmatian Jasper

Dalmatian Jasper

Rock Gypsum

Diamond in Kimberlite (Diamond (C in Kimberlite)) — igneous

Diamond in Kimberlite

Diamond (C in Kimberlite)

Greenstone / altered mafic rock (Likely chlorite–actinolite schist or metabasalt; exact identification requires testing) — metamorphic

Greenstone / altered mafic rock

Likely chlorite–actinolite schist or metabasalt; exact identification requires testing

Carved Stone Turtle (Carved Soapstone and Quartz) — mineral

Carved Stone Turtle

Carved Soapstone and Quartz

Basalt Arrowhead (worked stone) (Aphanitic mafic volcanic rock (Basalt)) — igneous

Basalt Arrowhead (worked stone)

Aphanitic mafic volcanic rock (Basalt)

Green glassy mineral specimen, likely rough emerald or green fluorite (Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph) — mineral

Green glassy mineral specimen, likely rough emerald or green fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph

Green Aventurine (Quartz (SiO2) with Fuchsite inclusions) — Mineral

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

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

Diamond (in jewelry setting)

Diamond (C - Carbon)

Chert / Flint Arrowhead (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Flint Arrowhead

Microcrystalline Quartz (SiO2)

André's Landing Rock (Sandstone Boulder) (Newark Supergroup Sandstone (likely Stockton Formation)) — sedimentary

André's Landing Rock (Sandstone Boulder)

Newark Supergroup Sandstone (likely Stockton Formation)

Brown chert or flint fragment (Microcrystalline quartz (SiO₂), commonly termed chert; exact identification requires testing) — sedimentary

Brown chert or flint fragment

Microcrystalline quartz (SiO₂), commonly termed chert; exact identification requires testing

Flint or chert flake (Microcrystalline quartz (SiO₂), likely fossiliferous or cortex-bearing chert) — sedimentary

Flint or chert flake

Microcrystalline quartz (SiO₂), likely fossiliferous or cortex-bearing chert

Obsidian (likely) (Volcanic glass; chiefly silica-rich rhyolitic composition (approximately 70–75% SiO₂)) — igneous

Obsidian (likely)

Volcanic glass; chiefly silica-rich rhyolitic composition (approximately 70–75% SiO₂)

Obsidian (likely black volcanic glass) (Obsidian; naturally occurring rhyolitic glass, primarily SiO₂) — igneous

Obsidian (likely black volcanic glass)

Obsidian; naturally occurring rhyolitic glass, primarily SiO₂

Chert (Yellow Jasper variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

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

Banded Chert (Flint)

Cryptocrystalline Quartz (SiO2)

Chert (River Stone/Pebble) (Chert (SiO2)) — sedimentary

Chert (River Stone/Pebble)

Chert (SiO2)

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

Titanium Aura Quartz (Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2)

Larimar (Pectolite) — mineral

Larimar

Pectolite

Chert or flint nodule (Microcrystalline quartz (SiO₂), commonly chalcedony with possible opaline silica) — sedimentary

Chert or flint nodule

Microcrystalline quartz (SiO₂), commonly chalcedony with possible opaline silica

Sea Glass (Teal/Turquoise) (Amorphous Silica (SiO2) with trace metal oxides) — Anthropogenic (Man-made material processed by nature)

Sea Glass (Teal/Turquoise)

Amorphous Silica (SiO2) with trace metal oxides

Anthropogenic (Man-made material processed by nature)

Sea Glass (Turquoise/Aqua) (Amorphous Silica (SiO2) with transition metal dopants) — Anthropogenic (Man-made material processed by nature)

Sea Glass (Turquoise/Aqua)

Amorphous Silica (SiO2) with transition metal dopants

Anthropogenic (Man-made material processed by nature)

Likely chert or weathered flint fragment (Microcrystalline quartz (SiO₂), possibly chalcedony-rich chert) — sedimentary

Likely chert or weathered flint fragment

Microcrystalline quartz (SiO₂), possibly chalcedony-rich chert

Brown chert or silicified limestone fragment (Microcrystalline quartz (SiO₂), possibly occurring as chert; exact identification requires testing) — sedimentary

Brown chert or silicified limestone fragment

Microcrystalline quartz (SiO₂), possibly occurring as chert; exact identification requires testing

Red jasper flint/chert knapped point (Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide coloration) — mineral

Red jasper flint/chert knapped point

Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide coloration

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

Chert Nodule in Limestone

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Chert or chalcedony fragment (Microcrystalline quartz (SiO₂), possibly jasper or agate) — sedimentary

Chert or chalcedony fragment

Microcrystalline quartz (SiO₂), possibly jasper or agate

Flint pebble (Chert / Flint (SiO2)) — Sedimentary

Flint pebble

Chert / Flint (SiO2)

Chert / Flint (Microcrystalline quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline quartz (SiO2)

Greywacke (River Slikkenstone) (Greywacke (Impure Sandstone)) — sedimentary

Greywacke (River Slikkenstone)

Greywacke (Impure Sandstone)

Chert (Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (White Chert / Flint) (Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (White Chert / Flint)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Diamond (Native Carbon (C)) — gemstone

Diamond

Native Carbon (C)

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

Diamond (or Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

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

Diamond (in a jewelry setting)

Carbon (C)

Chert or flint fragment (Microcrystalline quartz (SiO₂), commonly called chert; darker varieties are termed flint) — sedimentary

Chert or flint fragment

Microcrystalline quartz (SiO₂), commonly called chert; darker varieties are termed flint

Black obsidian arrowhead (Obsidian; volcanic glass, typically rhyolitic in composition (mostly SiO₂)) — igneous

Black obsidian arrowhead

Obsidian; volcanic glass, typically rhyolitic in composition (mostly SiO₂)

Chalk (Micrite (primarily Calcium Carbonate, CaCO3)) — sedimentary

Chalk

Micrite (primarily Calcium Carbonate, CaCO3)

Diamond (in Jewelry Setting) (Carbon (C)) — gemstone

Diamond (in Jewelry Setting)

Carbon (C)

Asphalt Pavement (with aggregate) (Asphalt concrete) — man-made composite

Asphalt Pavement (with aggregate)

Asphalt concrete

man-made composite

Cardstock (Paper) (Cellulose (C6H10O5)n) — sedimentary (man-made)

Cardstock (Paper)

Cellulose (C6H10O5)n

sedimentary (man-made)