Olivine (Peridot)
Olivine Group (Mg,Fe)2SiO4
mineral
Category
Organic Gemstone (Fossilized Resin)
Browse organic gemstone (fossilized resin) specimens identified by the Rock Identifier community.
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz / Rose Quartz fragment
Silicon Dioxide (SiO2)
mineral
Amazonite
Microline Feldspar (KAlSi3O8)
mineral
Milky Quartz (or Iron-Stained Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2 with iron inclusions)
metamorphic
White Quartz (Mushroom Carving)
Quartz (Silicon Dioxide - SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Citrine (Quartz variant)
SiO2 (Silicon Dioxide)
mineral
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
sedimentary
Obsidian
Obsidian (Amorphous volcanic glass, predominantly SiO2)
igneous
Amethyst
Amethyst (Silicon Dioxide SiO2 + Fe4+)
mineral
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Peach Moonstone (Feldspar variety)
Orthoclase Feldspar (KAlSi3O8) with inclusions
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Amazonite
K(AlSi3O8) - Lead-bearing Microcline (Potassium Feldspar)
Mineral
Hawk's Eye (Blue Tiger's Eye)
Quartz (fibrous crocidolite variety)
Mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
mineral
Quartz (Iron-stained or Milky)
Silicon Dioxide (SiO2)
mineral
Dalmation Stone
Peralkaline Rock (mixed silicate minerals)
igneous
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Jasper with Agate Inclusions
Jasper (Silicon Dioxide, SiO2) with Chalcedony/Agate
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) - Impure Cryptocrystalline Quartz
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
sedimentary
Dendritic Agate
Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)
Mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Tiger's Eye
Silicon Dioxide (SiO2)
Mineral