Citrine
Silicon Dioxide (SiO2) with iron impurities
Mineral
Category
Mineral (Evaporite)
Browse mineral (evaporite) specimens identified by the Rock Identifier community.
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Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Goethite)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Gold Nugget
Native Gold (Au)
mineral
Amethyst
Silicon Dioxide (SiO2) with Iron impurities
mineral
Blue Lace Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Bumblebee Jasper
Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)
igneous
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18)
mineral
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
mineral
Septarian Nodule (Dragon Stone)
Septarian concretion (composition: CaCO3 - Calcite, Aragonite, and Siderite/Limestone)
sedimentary
Quartz (Druzy/Macro-crystalline)
Silicon Dioxide (SiO2)
mineral
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
mineral
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Quartz (Druzy/Macro-crystalline)
Silicon Dioxide (SiO2)
mineral
Limonite after Pyrite (Pseudomorph)
FeO(OH)·nH2O following FeS2
mineral
Amethyst (Tumbled)
Silicon Dioxide (SiO2) with iron impurities
mineral
Gold Ore in Quartz/Schist
Auriferous Quartz and Sulfide-bearing Schist
Metamorphic/Igneous (Hydrothermal)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Jasper
Jasper (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Sunstone
Feldspar (variety Oligoclase or Labradorite), (Ca,Na)(Al,Si)4O8
mineral
Ocean Jasper
Orbicular Jasper (variety of Chalcedony/Quartz, SiO2)
sedimentary
Pyrite Concretion (Grapestone)
Iron Sulfide (FeS2) Concretion
sedimentary
Nuummite
Antigorite-Anthophyllite complex
metamorphic
Botryoidal Chalcedony in Geode/Vug
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Quartz (Silicon Dioxide with Iron impurities), SiO2
mineral
Amethyst (Quartz)
Silicon Dioxide (SiO2) with Iron impurities
mineral
Amazonite
Tectosilicate (variety of Microcline), K(AlSi3O8)
mineral
Ruby in Kyanite
Corundum (Al2O3) in Kyanite (Al2SiO5)
metamorphic
Carnelian
Carnelian (SiO2)
mineral
Amethyst (Tumbled Quarz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Ocean Jasper
Orbicular Jasper (Silicon Dioxide with impurities like Hematite and Chlorite, SiO2)
sedimentary
Moonstone with Black Tourmaline
Orthoclase (KAlSi3O8) with Schorl inclusions
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
mineral
Nuummite
Antophyllite-Gedrite (Orthorhombic amphiboles)
metamorphic