Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
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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Druzy Quartz on Matrix
Silicon Dioxide (SiO2) on host rock
mineral
Gemstone Ring
Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)
gemstone
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Blue Quartz (Dumortierite Quartz / Celestite)
Silicon Dioxide (SiO2) with inclusions
mineral
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Sandstone (Weathered Coastal Boulder)
Arenite (composed primarily of SiO2)
sedimentary
Diamond / Clear Quartz / Glass paste
Carbon (Diamond) / Silicon Dioxide (Quartz)
gemstone
Chert (specifically Yellow Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Iron-Stained Quartz (Red/Hematoid Quartz)
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Sapphire
Corundum (Al2O3)
mineral
Dyed Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Pumice
Pumice (Felsic volcanic glass)
igneous
Halite (Himalayan Pink Salt)
Halite - NaCl (Sodium Chloride)
Mineral (Evaporite)
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Prasiolite
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)
Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))
mineral
Quartz Pebble (Iron-stained)
Silicon Dioxide (SiO2)
sedimentary
Crackle Agate / Dyed Quartz
SiO2 (Silicon Dioxide)
mineral
Sandstone
Arenite
sedimentary
Chalcedony (Dyed Agate and Citrine-style Quartz)
Silicon Dioxide (SiO2)
gemstone
Yellow Ochre
Goethite-rich clay (Hydrated Iron Oxide: FeO(OH)·nH₂O)
mineral
Amethyst with Quartz Vein
SiO2 (Silicon Dioxide)
mineral
Carved Mottled Greenish-Yellow Crystal/Glass Object
Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.
Man-made Object/Uncertain Mineral
Blue-green turquoise-like tumbled stone
Turquoise, hydrous copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Diamond
Diamond (Pure Carbon, C)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Citrine
Quartz (SiO2) - variety Citrine
Mineral
Carnelian Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Diamond (in jewelry)
Cubic Carbon (C)
mineral
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Pumice
Pumice (a highly vesicular volcanic glass)
igneous
Aventurine
Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Yellow/Citrine Variety)
Silicon Dioxide (SiO2)
mineral
Banded Sedimentary Rock (Wishbone Stone / Banded Quartzite or Limestone)
Silicified limestone or banded sedimentary rock with mineral veins
sedimentary
Smoky Quartz
Quartz (SiO2) with natural radiation
mineral