Green Quartz (Prasiolite)
Silicon Dioxide (SiO2)
mineral
Category
Metamorphic And Igneous
Browse metamorphic and igneous specimens identified by the Rock Identifier community.
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Aventurine (Green Aventurine)
Silicon Dioxide with Fuchsite inclusions (SiO2)
mineral
Aquamarine (Beryl) Beads
Beryllium aluminum silicate (Be3Al2Si6O18)
gemstone
Bornite
Bornite (Cu5FeS4)
mineral
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Ruby / Red Tourmaline
Corundum (Al2O3) or Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)
mineral
Yellow Aventurine (specifically a carved crescent moon)
Silicon Dioxide (SiO2) with inclusions
mineral
Star Ruby
Corundum (Al2O3 with chromium and rutile inclusions)
mineral
Quartz Crystal Cluster (with Selenite Satin Spar)
Silicon Dioxide (SiO2)
mineral
Milky quartz (quartz-rich rock fragment)
Quartz, silicon dioxide (SiO₂)
mineral
Quartz Vein / Quartzite Specimens
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica
mineral
Rhodonite, Gray Moonstone, and White Feldspar Mix
Multiple: MnSiO3 (Rhodonite), (K,Na)AlSi3O8 (Feldspar/Moonstone)
mineral
Limonite-stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide/Hydroxide (FeO(OH)·nH2O) staining
mineral
Dragon Blood Jasper
Epidote with Red Piedmontite (silicate)
sedimentary
Quartz Druzy / Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Sapphire Rough (Corundum)
Corundum (Aluminum Oxide, Al2O3)
mineral
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
mineral
Dearest Jewelry (Multigemstone)
Combination of Diamond (C), Emerald (Be3Al2Si6O18), Amethyst/Rock Crystal (SiO2), Ruby (Al2O3), Emerald (Be3Al2Si6O18), Sapphire (Al2O3), and Topaz (Al2SiO4(F,OH)2)
Mineral
Emerald
Beryl (Be3Al2(SiO3)6)
gemstone
Quartz Pebble (River Agate / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Ruby
Corundum (Al2O3:Cr)
gemstone
Auriferous Quartz (Gold-bearing Quartz)
Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides
mineral
Red glass-like crystal, likely synthetic ruby or red glass
Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass
gemstone
Red Aventurine (Strawberry Quartz / Sunstone Quartz)
Silicon Dioxide with Hematite/Goethite inclusions (SiO2)
mineral
Green Quartz / Prasiolite
Silicon Dioxide (SiO2)
mineral
Aventurine
Quartz (SiO2) with Fuchsite inclusions
mineral
Yellow Sapphire
Corundum (Al2O3:Fe)
gemstone
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Vein / Quartz Matrix
Silicon Dioxide (SiO2)
mineral
Ruby (Raw Corundum)
Alumina (Al2O3) with Chromium traces
gemstone
Mica Sand / Vermiculite
Phyllosilicate group (typically Biotite or Muscovite)
mineral
Orange Aventurine / Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
Sapphire
Corundum (Al2O3)
mineral
Migmatite
Migmatite (Mixed Rock)
metamorphic
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral