Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)
Category
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)
Chalcedony (Botryoidal Agate vein)
Chalcedony (Microcrystalline Quartz) - SiO2
Green Kyanite
Kyanite (Al2SiO5)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Red Tiger's Eye beads
Tiger's Eye (variety of Chalcedony, SiO2)
Chert (specifically Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Amethyst (specifically Chevron Amethyst or Dream Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Chert (specifically Flint)
Cryptocrystalline Quartz (SiO2)
Pink Satin Spar (Satin Spar Selenite Dyed)
Gypsum (CaSO4·2H2O)
Blue Lace Agate (Chert/Chalcedony)
Silicon dioxide (SiO2)
Brecciated Jasper
Silicon dioxide (SiO2) microcrystalline quartz breccia
Milky Quartz
Silicon Dioxide (SiO₂)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Banded Agate (specifically Botryoidal/Orbicular Agate)
Silicon Dioxide (SiO2)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Onyx
Chalcedony (SiO2) with parallel banding
Bloodstone
Heliotrope
Chalcedony (Agate / Chert)
Silicon Dioxide (SiO2)
Chert (specifically Jasper or Flint variant)
Cryptocrystalline Quartz (SiO2)
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
Green Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
Shiva Lingam
Cryptocrystalline Quartz and Iron Oxide
Citrine Quartz
Macrocrystalline Quartz (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Chert (Jasper)
Silicon Dioxide (SiO2)
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
Green Calcite (often commercially called Green Onyx)
Calcium Carbonate (CaCO3)
Rose Quartz
Silicon dioxide (SiO2) with traces of titanium, iron, or manganese
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Chert
Chert (Microcrystalline Quartz, SiO2)
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Chert (specifically Flint or Chalcedony nodule)
Microcrystalline Quartz (SiO2)
Green Jasper
Jasper (variety of Microcrystalline Quartz, SiO2)
Banded Agate (specifically Botswana or Apricot Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Carnelian
SiO2 (Silicon Dioxide) - Translucent reddish-brown variety of Chalcedony
Chert (Jasper)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Smoky Quartz
Silicon Dioxide (SiO2)