Aquamarine (Rough)
Beryl (Be3Al2Si6O18)
mineral
Category
Sedimentary (Primary) With Artificial Modification
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
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Amethyst
Silicon dioxide with iron impurities (SiO2:Fe3+)
mineral
Limonite with Opal infusion
FeO(OH)·nH2O (Limonite) / SiO2·nH2O (Opal)
mineral
Pink Quartz / Rose Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Diamond
Diamond (C)
mineral
Specular Hematite (Specularite)
Hematite (Alpha-Fe2O3)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Gold Nugget
Native Gold (Au)
mineral
Diamond (appearing in jewelry)
Diamond (pure Carbon, C)
mineral
Citrine (Quartz variant)
SiO2 (Silicon Dioxide)
mineral
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with traces of Iron (Fe3+)
mineral
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Gold Ore (in Quartz/Pyrite)
Native Gold (Au) with Quartz (SiO2) and Pyrite (FeS2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Gold Nugget / Gold-bearing Quartz
Native Gold (Au)
mineral
Gold-bearing Quartz and Pyrite
Auriferous Quartz (SiO2 + Au) with Pyrite (FeS2)
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese or Iron Oxide inclusions
mineral
Amethyst (Variety of Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst (Quartz variety)
Silicon Dioxide (SiO2)
mineral
Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
man-made rock (technosol)
Amethyst (Faceted)
Silicon Dioxide with Iron impurities (SiO2)
mineral
Rough Diamond
Diamond (Native Element Carbon, C)
mineral
Granite (Weathered)
Phaneritic Felsic Igneous Rock
Igneous
Slate
Slate (Low-grade regional metamorphic rock)
metamorphic
Lapis Lazuli
Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Basalt
Basalt
igneous
Granite Cobble (River Stone)
Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)
igneous
Greenstone / Epidosite
Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)
metamorphic
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Aragonite
Aragonite (Carbonate mineral), CaCO3
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Diabase (also known as Dolerite)
Diabase
igneous
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Scoria (Lava Rock)
Mafic Vesicular Volcanic Rock
igneous
Epidote (likely Unakite component or Epidosite)
Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Slate
Slate (Low-grade foliated metamorphic rock)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chalcopyrite in Quartz (Gold-bearing Ore)
CuFeS2 (Chalcopyrite)
mineral