Carnelian Agate/Jasper blend
Silicon Dioxide (SiO2) - variety of Chalcedony
Category
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Carnelian Agate/Jasper blend
Silicon Dioxide (SiO2) - variety of Chalcedony
Quartzite (specifically an iron-stained or Carnelian-colored variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
Jasper (Green Jasper/Heliotrope variety)
Silicon Dioxide (SiO2)
Chert / Flint Nodule
Microcrystalline quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Hag Stone
Perforated Sedimentary Rock / Flint / Limestone
Gray Chert (Flint)
Microcrystalline Quartz (SiO2)
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
Rough Quartz (Smoky or Citrine variant)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Blue Lace Agate
Silicon Dioxide (SiO₂)
Sunstone
(Ca,Na)((Al,Si)2Si2O8) - Plagioclase Feldspar
Chert (Field Stone)
Microcrystalline Quartz (SiO2)
Rough Rose Quartz
Quartz (Silica - SiO2)
Granite
Granite (composed mainly of Quartz, Alkali Feldspar, and Plagioclase)
Chert (Flint variety)
Silicon Dioxide (SiO2)
Jasper (specifically Red Jasper)
Silicon Dioxide with Iron Oxides (SiO2 + Fe2O3)
Jasper (specifically Fancy Jasper or Bloodstone variety)
Silicon Dioxide (SiO2) with impurities (Iron oxides/silicates)
Aquamarine
Beryl (Be₃Al₂Si₆O₁₈), specifically a blue or cyan variety
Quartz with Matrix
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Tumbled carnelian (likely orange chalcedony)
Carnelian, a cryptocrystalline variety of quartz; SiO₂, commonly colored by iron oxides
Jasper-Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert
Microcrystalline Quartz (SiO2)
Chert (Flint variety)
Chert (Microcrystalline or Cryptocrystalline Quartz), SiO2
Blue Agate Ring
Silicon Dioxide (Chalcedony variety Agate), SiO2
Chert / Flint Pebble
Microcrystalline quartz (SiO2)
Jasper and Agate (Polychrome Jasper / Mookaite variety)
Silicon dioxide (SiO2) microcrystalline quartz
Chert (and Flint variant)
Chert (SiO2)
Quartz
Silicon Dioxide (SiO2)
Mookaite Jasper
Radiolarite (Silicified radiolarian chert)
Chert
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (specifically Milky or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Amber (Burmite)
Fossilized tree resin (Succinite variant)
Milky Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Silicon dioxide (SiO2) with inclusions of Fuchsite mica