Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Processed Mineral Product) in the encyclopedia
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Granite Pebble
Felsic Intrusive Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Yellow Beryl (Heliodor)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)
Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)
mineral
Lapis Lazuli
Lazurite-dominant Metamorphic Rock (complex aluminosilicate)
metamorphic
Cubic Zirconia (in Jewelry)
Zirconium Dioxide (ZrO2)
mineral
Amethyst on Agate
Crystalline Quartz (SiO2) with trace Iron (Fe3+)
mineral
Soapstone
Steatite (primarily composed of Talc, Mg₃Si₄O₁₀(OH)₂)
Metamorphic Rock
Amethyst (Faceted Gemstone)
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Milky or Druzy variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz Vein in Host Rock (often Granite or Schist)
Silicon Dioxide (SiO2) within host matrix
mineral with metamorphic or igneous host
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
gemstone
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2)
metamorphic
Cubic Zirconia (CZ) Jewelry
Zirconium dioxide (ZrO2)
mineral (synthetic)
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
mineral
Gold Ore in Quartz
Native Gold (Au) in Quartz (SiO2) matrix
mineral
Gray Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
mineral
Red Jasper
Silicon Dioxide (SiO2) - Chalcedony
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Slate
Foliated low-grade metamorphic rock
metamorphic
Quartz with Hematite
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
mineral
Red Jasper
Jasper (variety of Chert/Chalcedony, formula SiO2)
sedimentary
Limonite-stained Quartz
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O) coatings
mineral
Granite
Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)
igneous
Black Tourmaline in Quartz
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) in Silicon Dioxide (SiO2)
igneous
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)
mineraloid
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2 + Fe2O3)
sedimentary
Jasper
Silicon Dioxide (SiO2)
sedimentary
Heliotrope (Bloodstone)
Silicon dioxide (SiO2) with inclusions
mineral
Rough Aquamarine
Beryl (Be₃Al₂Si₆O‑₁₈)
mineral
Quartz Druze
Silicon Dioxide (SiO2)
mineral
Serpentine, likely a variety of Chrysoprase (green chalcedony) or a similar translucent green mineral.
Serpentine Group Minerals (e.g., Antigorite, Lizardite) or Chalcedony (SiO2) with nickel impurities for Chrysoprase green.
mineral
Snowflake Obsidian (Tumbled)
Obsidian with Cristobalite inclusions
igneous
Pink Granite Porphyry Cobble
Porphyritic K-Feldspar Granite
igneous
Amber
Succinite (approximate formula C10H16O)
mineraloid