Amazonite
Amazonite (KAlSi3O8, a variety of Microcline)
Category
Browse mineral, specifically a variety of quartz specimens identified by the Rock Identifier community.
Amazonite
Amazonite (KAlSi3O8, a variety of Microcline)
Jasper (specifically Picture Jasper or Landscape Jasper)
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
Pegmatitic Granite
Granite (composed of Quartz, Feldspar, and Mica)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Jadeite
Jadeite (NaAlSi2O6)
Chert Pebble (Yellow/Brown Jasper variety)
Microcrystalline Quartz (SiO2)
Citrine or Yellow Quartz
Quartz (SiO2) with iron impurities
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Sunstone with Black Tourmaline (Arfvedsonite)
Feldspar (Na,Ca)(Al,Si)4O8 with Schorl Na(Fe3+)3Al6(Si6O18)(BO3)3(OH)3(OH)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Geode Fragment
Crystalline Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Amethyst
Amethyst (SiO2)
Banded Agate (specifically Carnelian Agate)
Silicon Dioxide (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Chert (Flint) Nodule
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone
Arenite (specifically Quartz Arenite)
Brown Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Agate and Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Yellow Calcite
Calcium Carbonate (CaCO3)
Carnelian
Carnelian (a variety of Chalcedony, SiO ₂)
Ruby (Raw Corundum)
Alumina (Al2O3) with Chromium traces
Carnelian (a variety of Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
Chert (or Flint)
SiO2 (predominantly microcrystalline quartz)
Milky Quartz
Silica (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Moonstone (Grey)
Feldspar (variety Orthoclase/Adularia) with the formula (K,Na)AlSi3O8
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
Chert (specifically Jasper/Carnelian variety)
Microcrystalline quartz (SiO2)
Dalmatian Jasper
Feldspar porphyry (Microcline and Quartz with Arfvedsonite spots)
Emerald in Matrix
Beryl (Be3Al2Si6O18)
Jasper
Silicon Dioxide (SiO2) with impurities (mostly Iron Oxides)
Chert
Chert (SiO2)
Red Jasper (Siltstone/Quartz variety)
Silicon Dioxide (SiO2) with Hematite impurities
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)