Amethyst
Silicon Dioxide (SiO2) with trace Iron impurities
mineral
Category
Sedimentary (Primary) With Artificial Modification
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
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Diamond
Carbon (C)
mineral
Cinnabar in Quartz
Silicon Dioxide (Quartz, SiO2) with Mercury Sulfide inclusions (Cinnabar, HgS)
mineral
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Anthropogenic (Man-made)
Yellow Sapphire
Corundum (Al2O3)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
mineral (synthetic)
Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
mineral
Diamond in Gold Setting
Diamond (C - pure carbon)
mineral
Native Copper
Native Copper (Cu)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Mica-rich Pegmatite
Pegmatite (rich in Muscovite and Biotite)
igneous
Peridotite (Dunite)
Peridotite (comprising mainly Olivine)
igneous
Amethyst
Silicon Dioxide (SiO2) with trivalent iron (Fe3+) impurities
mineral
Banded Agate (specifically Lake Superior Agate type)
Silicon Dioxide (SiO2) - Microcrystalline Chalcedony
mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
mineral
Amethyst
SiO2 (Silicon Dioxide) - Purple variety of Quartz
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)
mineral
Opalite
Synthetic Opalised Glass
mineraloid (synthetic)
Diamond (or synthetic simulant)
Cubic C (Carbon)
mineral
Red Hematite (Banded Iron Formation)
Hematite (Fe2O3)
mineral
Gold in Matrix
Native Gold (Au)
mineral
Black Diamond / Black Sapphire
Carbon (C) or Corundum (Al2O3)
mineral
Tiger's Eye
SiO2 (Pseudomorph of Quartz after Crocidolite)
metamorphic
Ruby in Matrix
Corundum (Al2O3)
mineral
Azurite Malachite (Mixed)
Azurite-Malachite; Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Sunstone
Plagioclase Feldspar (Na, Ca)(Al, Si)4O8 with Hematite or Copper inclusions
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with iron traces)
mineral
Arsenopyrite in Quartz Matrix
Arsenopyrite (FeAsS)
mineral
Red Jasper
Silicon Dioxide (SiO₂)
Sedimentary Rock (Cryptocrystalline Quartz)
Chalk
Calcareous Ooze (composed primarily of coccoliths)
Sedimentary Rock
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Iron-stained Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Rough Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Quartz Pebble (Iron-Stained)
Quartz (Silicon Dioxide - SiO2)
mineral
Hypersthene
(Mg,Fe)SiO3 - Enstatite-Ferrosilite series
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Granite (phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)
igneous
Yellow Quartz (Citrine Quartz or Yellow Jasper)
Silicon Dioxide (SiO2) with iron impurities
mineral