Citrine
Silicon dioxide (SiO2)
mineral
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a microcrystalline quartz) specimens identified by the Rock Identifier community.
Carnelian Agate (with Quartz/Chalcedony)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite (Pink/Potassium Feldspar Granite)
Felsic Plutonic Rock (Potassium Feldspar, Quartz, Mica, and Amphibole)
igneous
Red Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Chalcedony
Chalcedony (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Rose Quartz
Silicon dioxide / Quartz (SiO2)
mineral
Quartzite with Iron Inclusions
Quartzite (largely SiO2) with Hematite/Limonite staining (Fe2O3)
metamorphic
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Chert (vuggy variety)
Microcrystalline silica (SiO2)
sedimentary
Chert (Nodular Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically a Worked Flint/Knapped Flake)
Chert / Flint (Microcrystalline Quartz, SiO2)
sedimentary
Carnelian
Carnelian (Silicon Dioxide - SiO2 with iron oxide impurities)
mineral
Quartz Geode/Druzy Quartz
Quartz (SiO₂)
Mineral
Quartz (Gray/Smoky Varieties)
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Flower Agate
Chalcedony (SiO2) with inclusions
mineral
Limestone (specifically Iron-stained or Argillaceous Limestone)
Calcium Carbonate (CaCO3) with Iron Oxide (Fe2O3) impurities
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Orange Calcite Sphere
Calcium Carbonate (CaCO3)
mineral
Chert / Flint Pebble
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chrysoprase
Chalcedony (cryptocrystalline quartz) with nickel inclusions; SiO2
Mineral
Jasper Conglomerate
Jasper Conglomerate (SiO2 matrix with varying mineral inclusions)
sedimentary
Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Sandstone (with ripple marks)
Arenite / Quartz Sandstone
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Charoite
Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)
metamorphic
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Beryl (likely Aquamarine) in matrix
Be3Al2(SiO3)6 (Beryllium Aluminum Silicate)
mineral
Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Blue Aventurine
Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions
mineral
Sunstone
Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8
Mineral
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusion of Mica
Mineral (Variety of Quartz)