Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Specifically A Cryptocrystalline Variety Of Quartz)
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Cryptocrystalline Variety Of Quartz) in the encyclopedia
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Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)
sedimentary
Chert (specifically a weathered Chert nodule or fragment)
Chert; Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Agate
SiO2 (Silicon dioxide, chalcedony variety)
Mineral
Agatized Chert / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
BROWN GRANITE (likely 'Tan Brown' or similar)
Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)
igneous
Chert (Flint variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Black Onyx
Silicon Dioxide (SiO2)
mineral
Leopard Skin Jasper
Silicon Dioxide (SiO2) with various inclusions
sedimentary
Geode with Quartz and possibly Jasper/Hematite
Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides
Mineral/Sedimentary Geode
Flint
SiO2 (Microcrystalline Quartz / Chert)
sedimentary
Chert (Field Stone)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (variety of Potassium Feldspar), KAlSi3O8
mineral
Amazonite (or Amazon Stone)
Potassium Feldspar (Microcline), K(AlSi3O8)
mineral
Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
mineral
Amethyst (Raw Cluster)
Silicon Dioxide with iron impurities (SiO2)
mineral
Honey-colored chalcedony (likely carnelian)
Microcrystalline quartz, SiO₂; orange chalcedony colored by iron oxides
mineral
Sandstone (with ripple marks)
Arenite / Quartz Sandstone
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
Mineral
Quartz (Clear / Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Jadeite (Jade)
Jadeite (NaAlSi2O6)
metamorphic
Jasper
Jasper (Cryptocrystalline Quartz; SiO2)
sedimentary
Jasper (specifically Red or Brecciated Jasper variant)
Jasper (Microcrystalline Quartz - SiO2)
sedimentary
Tumbled brown stone, likely jasper or iron-stained quartz
Microcrystalline quartz (SiO₂), possibly chalcedony/jasper with iron-oxide inclusions
mineral
Jasper and Quartz Pebble
Silicon dioxide (SiO2) microcrystalline quartz
sedimentary
Chert (Flint Nobule)
Silicon Dioxide (SiO2)
sedimentary
Polished red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
mineral
Dalmatian Stone (Dalmation Jasper)
Aplite with Arfvedsonite inclusions
igneous
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically a Worked Flint/Knapped Flake)
Chert / Flint (Microcrystalline Quartz, SiO2)
sedimentary
Chert (variations include Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Green Aventurine (Carved)
Silicon Dioxide (Quartz variant) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O(OH)2)
mineral
Carnelian
Carnelian (Silica/Quartz Variety), SiO2 with Fe2O3 impurities
mineral
Tree Agate (or Moss Agate), faceted into a crystal tower
Dendritic Agate (Silicon Dioxide, SiO2)
Mineral
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Crazy Lace Agate
Chalcedony (SiO2) with microcrystalline quartz
sedimentary
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral