Quartz (Druzy / Goldstone Gemstone Cabochon)
Silicon Dioxide (SiO2)
gemstone
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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Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
mineral
Sandstone
Arenite (Clastic Sedimentary Rock)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
not a rock (synthetic material)
Borosilicate Glass (Manufactured)
SiO2 + B2O3 (Silicon dioxide and Boron trioxide)
Synthetic/Amorphous Solid
Banded Black Onyx (Chalcedony)
Silicon Dioxide (SiO₂)
mineral
Sandstone Pebble
Sandstone (primarily Quartz, SiO2)
sedimentary
Gravel and Sediment Sample
Mixed clastic sediment
sedimentary
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Plume Agate or Moss Agate
Agate (SiO2)
mineral
Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Asphalt Concrete
Bituminous conglomerate
sedimentary
Corundum
Corundum (Al2O3)
Mineral
Sandstone (with potential fossil fragments)
Sandstone (SiO2 dominated with iron oxides)
sedimentary
Basaltic Tuff / Volcanic Breccia
Pyroclastic Breccia / Lithic Tuff
igneous
Chalcanthite
Copper(II) sulfate pentahydrate (CuSO4·5H2O)
mineral
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Sandstone
Quartz Arenite / Sedimentary Rock
sedimentary
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Mineral
Smoky Quartz (with Druzy/Polished Edge)
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Synthetic Costume Accessory (Non-Geological)
Polyester and Acrylic Fiber (Anthropogenic polymer)
Synthetic / Man-made textile
Sandstone (Iron-stained)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Sandstone
Arenite (SiO2 composed primarily of quartz)
sedimentary
Ocean Jasper or Orbicular Jasper
SiO2
mineral
Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)
Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)
mineral
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
mineral
Strawberry Quartz and Rose Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Sandstone
Clastic sedimentary rock (Quartz arenite or arkose)
sedimentary
Quartz Vein in Sandstone
Quartz (SiO2) in Clastic Sedimentary Rock
sedimentary
Quartz-rich gravel fragment
Quartz (silicon dioxide, SiO₂), possibly with feldspar or carbonate inclusions
mineral
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
sedimentary
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
mineral
Ruby (or potential synthetic/imitation)
Corundum (Al2O3)
gemstone
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Diamond (Rough)
Diamond (Carbon, C)
Mineral
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
sedimentary
Rough amethyst-bearing quartz specimens
Quartz, SiO₂; purple coloration from trace iron and irradiation
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Grass (Organic Matter/Soil)
Poaceae (family of monocotyledonous flowering plants)
Organic Materia (Not a rock or mineral)