Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral (Specifically A Gemstone Variety)
Browse mineral (specifically a gemstone variety) specimens identified by the Rock Identifier community.
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Orange Quartzite / Carnelian Agate
Silicon Dioxide (SiO2)
metamorphic
Amazonite
Potassium Feldspar (KAlSi3O8)
Mineral
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Polished carnelian agate
Microcrystalline quartz (SiO₂), chalcedony variety with iron-oxide coloration
gemstone
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Black Veined Jasper (Spiderweb Jasper)
Silicon Dioxide (SiO2)
sedimentary
Yellow Jasper
Silicon dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Carnelian
SiO2 (Silicon Dioxide) - Translucent reddish-brown variety of Chalcedony
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Rainbow Moonstone
White Labradorite (Feldspar variety)
mineral
Banded Agate (specifically Sardonyx or Carnelian Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Banded Agate
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Carnelian Agate/Jasper blend
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Chert / Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Serpentine (Serpentinite)
Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
sedimentary
Yellow Topaz (Imperial or Precious Topaz)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Citrine Quartz
Macrocrystalline Quartz (SiO2)
mineral
Jasper (specifically Brecciated or Agated Jasper)
Silicon Dioxide (SiO2) - Chalcedony with impurities
Mineral / Sedimentary
Red Jasper (possibly banded Jaspilite)
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
sedimentary
Moonstone
Orthoclase Feldspar (specifically showing adularescence)
Mineral
Sunstone
(Ca,Na)((Al,Si)2Si2O8) - Plagioclase Feldspar
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Agate / Lace Agate
Agate (Silica/Quartz) - SiO2
mineral
Agate (specifically Oco or Banded Agate)
Agate (a variety of Chalcedony), SiO2 (Silicon Dioxide)
mineral
Black Onyx
Silicon dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Tumbled Black Stone
Unknown, possibly Obsidian, Onyx, or Tourmaline
igneous or mineral
Fancy Jasper
Silicon dioxide (SiO2)
sedimentary
Agate (specifically a Banded Agate with a Quartz Druzy center)
Silicon Dioxide (SiO2)
mineral
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
mineral
Quartzite (specifically Milky Quartz variety)
Quartz (SiO2)
metamorphic
Quartz-bearing geode or vuggy quartz specimen
Quartz, silicon dioxide (SiO₂), possibly with chalcedony and iron-oxide staining
mineral
Jasper (specifically Fancy or Polychrome Jasper)
Silicon Dioxide (SiO2) - Chalcedony
Sedimentary
Citrine
Silicon Dioxide (SiO2)
mineral
Rose Quartz
SiO2 (Silicon Dioxide)
mineral