Chevron Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe3+)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Chevron Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe3+)
Diamond
Carbon (C)
Cuprite
Cuprite (Copper(I) oxide, Cu2O)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Chlorite Included Quartz
Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Li)6AlSi3O10(OH)8
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Tiger's Eye
Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2
Banded Calcite (known as Mexican Onyx or Calcite Alabaster)
Calcium Carbonate (CaCO3)
Banded Agate (specifically Botswana Agate appearance)
Silicon Dioxide (SiO2)
Moss Agate
Chalcedony (Silicon Dioxide - SiO2) with inclusions
Howlite and Purple Amethyst Druzy
Calcium Borosilicate Hydroxide (Howlite) and Silicon Dioxide (Quartz/Amethyst)
Garnet (likely Almandine or Pyrope)
Garnet Group (Fe3Al2Si3O12 or Mg3Al2Si3O12)
Milky Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Greenschist
Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)
Obsidian
Obsidian (Volcanic Glass, SiO2)
Amber
Succinite (Fossilized Resin)
Diamond (Princess Cut)
Carbon (C)
Garnet
Almandine formula: Fe3Al2(SiO4)3
Diamond (Colorless/White)
Carbon (C)
Milky Quartz
Silicon Dioxide (SiO2)
Black Onyx
Chalcedony (SiO2) with parallel banding
Rose Quartz
Silicon dioxide (SiO2)
Druzy Quartz (on Quartzite or Chert)
Silicon Dioxide (SiO2)
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Lapis Lazuli
Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Pyrite, and Calcite)
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
Gold Placer (Gold Flakes and Nuggets)
Native Gold (Au)
Amethyst Geode
Silicon Dioxide with impurities (SiO2)
Jasper with Chalcedony
Silicon Dioxide (SiO2)
Pearl
Calcium carbonate (CaCO3) as Aragonite or Calcite
Gold
Native Gold (Au)
Amethyst
Crystalline Silicon Dioxide with Iron impurities (SiO2)
Labradorite (Gray Tumbled)
Labradorite (Ca,Na)(Al,Si)4O8
Citrine
Silicon dioxide (SiO2)