Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Category
Browse mineral with artificial coating specimens identified by the Rock Identifier community.
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Amazonite
Potassium Feldspar (Microcline), K(AlSi3O8)
Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
Malachite
Malachite (Cu2CO3(OH)2)
Labradorite (Polished Sphere)
Labradorite ((Ca, Na)(Al, Si)4O8)
Labradorite (Gray Moonlight variation)
(Ca, Na)(Al, Si)4O8
Amber (Copal)
Succinite (fossilized resin)
Blue Chalcedony
Silicon Dioxide (SiO2)
Yellow Agate (Chalcedony)
Silicon Dioxide (SiO2)
Grey Chalcedony
Silicon Dioxide (SiO2)
Peach Moonstone
Feldspar (KAlSi3O8) with inclusions
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) with host rock (often Schist or Basalt)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Quartz Geode Fragment
Crystalline Silicon Dioxide (SiO2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Gold Nuggest
Native Gold (Au)
Amethyst Geode
Silicon Dioxide with impurities (SiO2)
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
Amazonite
Potassium Feldspar (Microcline) - KAlSi3O8
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Chevron Amethyst
SiO2 (Quartz with Manganese/Iron impurities)
Boulder Opal
Precious Opal in Ironstone (Amorphous Hydrated Silica, SiO2·nH2O)
Botryoidal Chalcedony (Agate/Desert Rose Chalcedony)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Ruby
Corundum (Al2O3 with Chromium traces)
Orange Calcite
Calcium Carbonate (CaCO3)
Ferruginous Quartz
Iron-stained Quartz (SiO2 with Fe2O3 impurities)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Amazonite
K(AlSi3O8) - Potassium Feldspar (Microcline variant)
Chalcedony (River Stone)
Silicon Dioxide (SiO2)
Pyrite (on Quartz matrix)
Iron Disulfide (FeS2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
Citrine
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Bismuth
Bismuth (element Bi) with oxidized thin-film interference layer
Milky Quartz with Iron Inclusions
Crystalline Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Fuchsite
Cr-bearing Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Bloodstone (Heliotrope)
Chalcedony (SiO2) with inclusions of Iron Oxide or Red Jasper
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
Amber
Organic gemstone (Succinite)