Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Banded Agate (specifically Botryoidal/Orbicular Agate)
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (specifically varieties like Chalcedony or Flint)
Silicon Dioxide (SiO2)
Green Kyanite
Kyanite (Al2SiO5)
Smoky Quartz
Silicon Dioxide (SiO2)
Granite (specifically Pink or Alkali Feldspar Granite)
Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
Blue Lace Agate (Chert/Chalcedony)
Silicon dioxide (SiO2)
Chert (specifically Jasper or Flint variant)
Cryptocrystalline Quartz (SiO2)
Banded Agate (specifically Botswana or Apricot Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Red Tiger's Eye beads
Tiger's Eye (variety of Chalcedony, SiO2)
Milky Quartz or Moonstone
Silicon Dioxide (SiO2) or Potassium Aluminum Silicate (KAlSi3O8)
Green Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
Quartz (Milky/Opaque variety)
Silicon Dioxide (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Shiva Lingam
Cryptocrystalline Quartz and Iron Oxide
Pink Satin Spar (Satin Spar Selenite Dyed)
Gypsum (CaSO4·2H2O)
Orange Quartzite / Carnelian Agate
Silicon Dioxide (SiO2)
Chalcedony (Quartz Pebbles)
Silicon Dioxide (SiO2)
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Carnelian
SiO2 (Silicon Dioxide) - Translucent reddish-brown variety of Chalcedony
Brecciated Jasper
Silicon dioxide (SiO2) microcrystalline quartz breccia
Chert (specifically Flint or Chalcedony nodule)
Microcrystalline Quartz (SiO2)
Green chalcedony (likely agate) earrings
Chalcedony, microcrystalline quartz (SiO₂)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Onyx
Chalcedony (SiO2) with parallel banding
Bloodstone
Heliotrope
Chalcedony (Botryoidal Agate vein)
Chalcedony (Microcrystalline Quartz) - SiO2
Blue chalcedony (beaded bracelet)
Chalcedony, microcrystalline quartz (SiO₂)
Chert (Black Chert/Flint)
Cryptocrystalline Quartz (SiO2)
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Amethyst (specifically Chevron Amethyst or Dream Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Chalcedony (Agate / Chert)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)