Blue Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide - SiO2)
mineral
Category
Mineral (Synthetic Paper And Ink Polymorph)
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
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Carnelian
Chalcedony (SiO2) with Iron Oxide inclusions
mineral
Chrysocolla on Quartz with Iron Oxides
Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)
mineral
Banded Agate
Silicon Dioxide (SiO2)
mineral
Alexandrite in Matrix
Chrysoberyl (BeAl2O4 with Chromium impurities)
mineral
Pearl (as a Biogenic Mineral)
Calcium Carbonate (mostly Aragonite) with Conchiolin; CaCO3
mineral
Chalcedony (Quartz Pebble)
Cryptocrystalline Quartz (SiO2)
mineral
Moss Agate
Cryptocrystalline Quartz (SiO2 with manganese or iron oxide inclusions)
mineral
Gold Nugget
Native Gold (Au)
mineral
Picture Jasper
SiO2, Microcrystalline Quartz
mineral
Specular Hematite and Magnetite Ore
Iron Oxide (Fe2O3 and Fe3O4)
mineral
Obsidian
Volcanic Glass
igneous
Druzy Quartz Geode (Vug)
Silicon Dioxide (SiO2)
mineral
Granitic Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Lepidolite
K(Li,Al)3(Si,Al)4O10(F,OH)2
mineral
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
mineral
Cleavable Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite in Quartz
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral
Silver (Native Silver)
Native Silver (Ag)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
gemstone
Clear Quartz (Faceted)
Silicon Dioxide (SiO2)
gemstone
Lepidolite in Quartz
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 / SiO2
mineral
Amber
Succinates
mineraloid
Rough Quartz (Smoky or Citrine variant)
Silicon Dioxide (SiO2)
mineral
Sandstone or Quartzite
Arenite (if sedimentary) / Quartzite (if metamorphic)
Sedimentary or Metamorphic
Agate
Chalcedony (SiO2)
mineral
Quartz Crystal Rock
Silicon Dioxide (SiO2)
mineral
Celestite
Celestine (SrSO4)
mineral
Wollastonite
Calcium Inosilicate, CaSiO3
mineral
Peacock Ore
Bornite (Cu5FeS4) with surface tarnish
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Yellow Calcite
Calcium Carbonate, CaCO3
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Labradorite
(Ca,Na)(Al,Si)4O8 (Plagioclase Feldspar)
mineral
Microcline Feldspar
KAlSi3O8
mineral
Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Point
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartz / Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral