Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate (variety of Microcline)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate (variety of Microcline)
Chrysocolla on Matrix
Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
Chalcedony (Agate/Carnelian variant)
Cryptocrystalline Silica (SiO2)
Diamond (or Cubic Zirconia)
C (Carbon) or ZrO2 (Zirconium Dioxide)
Fuchsite
Cr-bearing Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Diamond (appearing as a jewelry centerpiece)
Diamond (Formula: C)
Turquoise (likely stabilized or simulated Howlite)
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
Mixed rock and mineral collection
Multiple specimens; visible pieces may include quartz, calcite, agate/chalcedony, jasper, and dyed or coated materials
Quartz (Chalcedony)
Silicon Dioxide (SiO2)
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
Malachite
Copper(II) carbonate hydroxide [Cu2CO3(OH)2]
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
Obsidian
Volcanic Glass (SiO2)
Costume Jewelry with Synthetic Gemstones
Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)
Fossilized Shark Tooth (Otodus)
Otodus sp. (calcium phosphate/hydroxylellite)
Quartz geode
Microcrystalline quartz and drusy quartz (SiO₂), commonly lining a chalcedony-rich cavity
Quartz with inclusions
SiO2
Milk Quartz (White Quartz)
Silicon Dioxide (SiO2)
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
Malachite in Host Rock
Cu2CO3(OH)2
Mother of Pearl and Onyx
Aragonite (Mother of Pearl) and Chalcedony (Onyx)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)
Moss Agate
Silicon Dioxide with inclusions (SiO2)
Raw Diamond (Rough Uncut)
Diamond (C - pure carbon)
Likely weathered metallic mineral or slag fragment
Indeterminate; possibly iron-rich sulfide/oxide material or industrial slag
Gold Ore
Native Gold (Au) in Quartz or Silicate matrix
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and organic impurities
Vesicular volcanic rock, likely scoria
Scoria; composition commonly basaltic to andesitic, rich in plagioclase and pyroxene
Pyrite
Iron Disulfide (FeS2)
Chalcedony (Quartz)
Silicon dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Amazonite
Microcline (K(AlSi3O8))
Quartz with inclusions (likely Tourmaline or Biotite)
Silicon Dioxide (SiO2)
Snowflake Obsidian
Volcanic Glass with Cristobalite inclusions (SiO2)
Green Fluorite
Calcium Fluoride (CaF2)
Fossil Shark Tooth
Chondrichthyes (Class)
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O)
Grape Agate
Chalcedony (Silicon Dioxide, SiO2)
Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)
Heliodor (Yellow Beryl)
Beryl (Be3Al2Si6O18 with iron impurities)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)