Sapphire in a ring
Corundum (Al2O3)
Category
Browse mineral with metamorphic or sedimentary host specimens identified by the Rock Identifier community.
Sapphire in a ring
Corundum (Al2O3)
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
Green Slate (Greenstone)
Metamorphic shale (varied composition)
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO₂)
Quartz
Silicon Dioxide (SiO2)
Pyrite on Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Aquamarine with Sunstone
Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8
Zoisite with Ruby
Anyolite (Ca2Al3(SiO4)3(OH) with Al2O3:Cr)
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
Biotite (Mica)
Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
Marble
Recrystallized Calcite (CaCO3)
Garnet (Pyrope or Almandine)
Silicate (X3Y2Si3O12)
Orthoclase Feldspar (Sunstone variety)
KAlSi3O8 (Potassium Aluminum Silicate)
Quartz (likely)
Quartz (SiO2 - Silicon Dioxide)
Lapis Lazuli (Tumbled)
Lazurite-dominated contact metamorphic rock
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
Red Jasper
SiO2 (Silicon Dioxide with Iron inclusions)
Lapis Lazuli (Raw)
Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S
Rutilated Quartz
Quartz with Rutile inclusions (SiO2 with TiO2)
Smoky Quartz (Polished)
Silicon Dioxide (SiO2)
Sunstone
Oligoclase (Feldspar variety), (Na,Ca)(Si,Al)4O8
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
Yellow Aventurine (specifically a carved crescent moon)
Silicon Dioxide (SiO2) with inclusions
Gneiss
Gneiss (a metamorphic rock)
Milky Quartz
Silicon Dioxide (SiO2)
Rough Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
Tiger's Eye (Brown/Dark variety)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
Garden Quartz (Lodolite)
Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)
Quartzite River Rock with Dendrites
Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions
Limonite-stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide/Hydroxide (FeO(OH)·nH2O) staining
Schist
Mica Schist
Zircon
Zircon (ZrSiO4)
Moonstone
Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Quartz with inclusions (likely Tourmaline or Biotite)
Silicon Dioxide (SiO2)
Red Garnet (Pyrope or Almandine)
Garnet Group (A3B2(SiO4)3)
Garnet (Pyrope-Almandine series)
Garnet Group, (Mg,Fe)3Al2Si3O12