Colorless faceted gemstone, likely cubic zirconia
Cubic zirconia (synthetic ZrO₂), possibly glass or quartz
gemstone
Category
Mineral Like (Natural Glass)
Browse mineral like (natural glass) specimens identified by the Rock Identifier community.
Learn about Mineral Like (Natural Glass) in the encyclopedia
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Citrine (Heat-treated Amethyst)
Citrine Quartz (SiO2)
Mineral (Tectosilicate)
Snowflake Obsidian
Volcanic Glass with Cristobalite inclusions (SiO2)
igneous
Green aventurine pebble
Quartz (SiO₂) with fuchsite mica inclusions
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Mahogany Obsidian
Volcanic Glass with Hematite inclusions (SiO2)
igneous
Sandstone
Arenite (SiO2 primarily)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Tumbled carnelian (orange chalcedony)
Carnelian, a variety of microcrystalline quartz (SiO₂), often colored by iron oxides
gemstone
Sandstone
Clastic Sedimentary Rock
sedimentary
Sedimentary Sandstone with Iron Oxide
Ferruginous Sandstone
sedimentary
Sandstone
Arenite (primarily SiO2, silica)
sedimentary
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
Red gemstone, likely ruby
Corundum (Al₂O₃), colored red by chromium; identity cannot be confirmed from the photo
gemstone
Quartz with Iron Inclusions
Silicon Dioxide (SiO2) with Hematite or Limonite staining
mineral
Strawberry Quartz and Rose Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Green Quartz (Prasiolite/Adventurine/Jasper)
Silicon Dioxide (SiO2)
mineral
Yellow Sapphire (Corundum)
Corundum (Aluminum Oxide, Al2O3)
mineral
Citrine (Yellow Quartz)
Silicon Dioxide (SiO2)
Mineral
Moldavite
Tektite (Natural Silicate Glass)
gemstone
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Carnelian and Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite and Limonite inclusions
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Citrine
Silicon Dioxide (SiO2) - Macrocrystalline Quartz variety
mineral
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (specifically Iron-stained Quartz Sandstone)
sedimentary
Opalite
Synthetic Glass (Simulated Opal)
mineral
Sandstone
Arenite (predominantly SiO2)
sedimentary
Cullet Glass (Man-made Glass Slag)
Amorphous Silica (SiO2) with chemical additives
Mineraloid
Dyed Quartz Pendant
Silicon Dioxide (SiO2) with artificial dye
mineral
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Smoky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (with Iron Inclusions)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct