Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
not a rock (synthetic material)
Category
Synthetic Material (Not A Rock Or Mineral)
Browse synthetic material (not a rock or mineral) specimens identified by the Rock Identifier community.
Learn about Synthetic Material (Not A Rock Or Mineral) in the encyclopedia
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Blue gemstone ring (likely sapphire)
Likely corundum, Al₂O₃; the dark, reflective appearance may also indicate a treated or synthetic stone.
gemstone
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3 with Chromium trace elements)
mineral
Polished dendritic agate or jasper pebble
Microcrystalline quartz (SiO₂), likely chalcedony with iron-oxide inclusions
mineral
Fossil Snail
Gastropoda (fossilized)
fossil
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
sedimentary
Cobaltoan Calcite / Pink Dolomite (Possible)
Cobaltoan Calcite: (Ca,Co)CO3; Pink Dolomite (or Thulite): CaMg(CO3)2 or Mn-Dolomite / (Thulite: Mn2+3Al2(Si2O7)(SiO4)O(OH))
Mineral / Rock (depending on purity)
Tumbled amethyst
Amethyst, purple quartz (SiO₂)
mineral
Milky quartz pendant
Quartz (silicon dioxide, SiO₂)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Note: The image provided is a fabric sock, not a geological specimen.
Polyester-Cotton Blend with Elastane
Synthetic/Natural Fiber (Non-Geological)
Iron-rich breccia or weathered ironstone
Goethite–hematite-bearing limonite, possibly with quartz and altered rock fragments
igneous
Polished ocean jasper (orbicular jasper)
Microcrystalline quartz/chalcedony with iron- and manganese-bearing inclusions; SiO₂
mineral
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Blue Quartz / Glass Gemstone Pendant
SiO2 (Silicon Dioxide) or Synthetic Glass
gemstone
Diamond (or Diamond Simulant)
Native Carbon (C)
gemstone
Silicon
Element Si
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Blue quartz (likely dyed or synthetic-treated quartz beads)
Quartz, silicon dioxide (SiO₂)
mineral
Smoky Quartz
SiO2 (Silicon Dioxide)
mineral
Sandstone
Sandstone (Siliciclastic Sedimentary Rock)
sedimentary
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Cubic Zirconia
Zirconium dioxide (ZrO2)
gemstone
Lapis Lazuli (Tumbled Stone)
Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (predominantly Lazurite)
metamorphic
Diamond or Cubic Zirconia
Carbon (diamond) or Zirconium dioxide (cubic zirconia)
gemstone
Diamond (Rough)
Diamond (Carbon, C)
Mineral
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Anthropogenic / Non-mineral
Plume Agate or Moss Agate
Agate (SiO2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Sandstone
Clastic sedimentary rock
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Likely amethyst cabochon ring
Quartz, SiO₂; purple coloration from trace iron and irradiation
gemstone
Laterite (Iron-rich bauxite or Gossan)
Ferricrete (Fe2O3·nH2O)
sedimentary
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)