Rock Identifier

Category

Non Geological

Browse non geological specimens identified by the Rock Identifier community.

Learn about Non Geological in the encyclopedia

Common Opal

Mudstone

Green Beryl

Matte Obsidian

Sapphire

Hornfels

Argillite

Mint Opal

Plazolite

Bixbite

Quartzite River Rock (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Rock

Quartzite (primarily SiO2)

Quartzite (with possible Calcite/Limestone weathering) (Quartzite (primarily SiO2)) — metamorphic

Quartzite (with possible Calcite/Limestone weathering)

Quartzite (primarily SiO2)

Obsidian (Volcanic Glass (Amorphous Silica, SiO2)) — igneous

Obsidian

Volcanic Glass (Amorphous Silica, SiO2)

Quartzite Cobble (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite Cobble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Cullet Glass (sometimes mistaken for Blue Obsidian or Slag) (Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)) — mineraloid / industrial byproduct

Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)

Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)

mineraloid / industrial byproduct

Tektite (Tektite (high-silica natural glass)) — Mineraloid

Tektite

Tektite (high-silica natural glass)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Amber (Succinite (specifically for Baltic Amber), Formula: C10H16O) — Organic Gemstone (often associated with Sedimentary sequences)

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Organic Gemstone (often associated with Sedimentary sequences)

Obsidian (Obsidian (principally SiO2 + MgO, Fe3O4)) — igneous

Obsidian

Obsidian (principally SiO2 + MgO, Fe3O4)

Obsidian (Volcanic glass (SiO2 - Silicon Dioxide with impurities)) — igneous

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

Precious Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Precious Opal

Hydrated Silica (SiO2·nH2O)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Snowflake Obsidian (Volcanic Glass (SiO2) with Cristobalite inclusions) — igneous

Snowflake Obsidian

Volcanic Glass (SiO2) with Cristobalite inclusions

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

River Stone (Quartzite Pebble) (Metamorphosed Quartz-rich Sandstone (SiO2)) — metamorphic

River Stone (Quartzite Pebble)

Metamorphosed Quartz-rich Sandstone (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

River Cobble (likely Basalt or Metagraywacke) (Non-specific water-worn lithic fragment) — igneous or metamorphic

River Cobble (likely Basalt or Metagraywacke)

Non-specific water-worn lithic fragment

igneous or metamorphic

Shungite (Non-crystalline carbon (Fullerenes / Carbon-60)) — metamorphic

Shungite

Non-crystalline carbon (Fullerenes / Carbon-60)

Bismuth (Bismuth (Bi)) — mineral

Bismuth

Bismuth (Bi)

Emerald in Matrix (Beryl (Be3Al2Si6O18) containing Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18) containing Chromium/Vanadium impurities

Rough Green Sapphire (Corundum) (Corundum (Al2O3 - Aluminum Oxide with trace elements)) — mineral

Rough Green Sapphire (Corundum)

Corundum (Al2O3 - Aluminum Oxide with trace elements)

Gold (Aurum (Elemental Gold, Au)) — Mineral, Metal (element)

Gold

Aurum (Elemental Gold, Au)

Mineral, Metal (element)

Rose Quartz (Rose Quartz (SiO2)) — Mineral

Rose Quartz

Rose Quartz (SiO2)

Ruby (Raw Corundum) (Corundum (Al2O3 with Chromium impurities)) — mineral

Ruby (Raw Corundum)

Corundum (Al2O3 with Chromium impurities)

Limonite (Iron Ore/Hydrated Iron Oxide) (Limonite (mixture of FeO(OH)·nH₂O minerals, mainly Goethite, FeO(OH) and Lepidocrocite, FeO(OH))) — Mineral

Limonite (Iron Ore/Hydrated Iron Oxide)

Limonite (mixture of FeO(OH)·nH₂O minerals, mainly Goethite, FeO(OH) and Lepidocrocite, FeO(OH))

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Quartzite with Epidote (Meta-quartzite containing Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))) — metamorphic

Quartzite with Epidote

Meta-quartzite containing Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Limonite (Ironstone Concretion) (Limonite (FeO(OH)·nH2O)) — sedimentary

Limonite (Ironstone Concretion)

Limonite (FeO(OH)·nH2O)

Eclogite (Eclogite (High-pressure metamorphic rock)) — metamorphic

Eclogite

Eclogite (High-pressure metamorphic rock)

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Corundum (variety Ruby/Sapphire) (Aluminum Oxide (Al2O3)) — mineral

Corundum (variety Ruby/Sapphire)

Aluminum Oxide (Al2O3)

Soapstone (Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)) — metamorphic

Soapstone

Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite (Silicon Dioxide (SiO2)) — metamorphic

Quartzite

Silicon Dioxide (SiO2)

Black Obsidian (Volcanic Glass (SiO2 with impurities)) — igneous

Black Obsidian

Volcanic Glass (SiO2 with impurities)

Quartzite (Quartzite (SiO2-rich metamorphic rock)) — metamorphic

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Quartzite (Metamorphosed Quartz Sandstone) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone

Quartzite (Metamorphic Quartzite) — metamorphic

Quartzite

Metamorphic Quartzite

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)