Sapphire (Raw/Rough)
Corundum (Al2O3)
mineral
Category
Mineral (Specifically A Mineraloid)
Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Mineraloid) in the encyclopedia
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Limonite with Pyrite
Hydrated Iron Oxide Hydroxide, FeO(OH)·nH2O
mineral
Pegmatite (Quartz and Feldspar)
Igneous Pegmatite containing SiO2 and KAlSi3O8
igneous
Limonite / Iron Oxide Concretion
FeO(OH)·nH2O (Hydrated iron oxide)
mineral
Peach Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2) with impurities
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Moonstone
Orthoclase (Potassium Feldspar), (K,Na)AlSi3O8
mineral
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Biotite Mica Schist
Metamorphic Rock containing Biotite K(Mg,Fe)3AlSi3O10(OH)2
metamorphic
Quartz with Tourmaline
Silicon Dioxide (SiO2) with complex cyclosilicate inclusions
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Agate / Chalcedony
Silicon dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Bloodstone
Chalcedony (Variety Heliotrope), SiO2
mineral
Jasper
Microcrystalline Quartz (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Jasper / Chert)
Silicon Dioxide (SiO2)
sedimentary
Chalcedony Geode
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Oxide Inclusions
Silicon dioxide with limonite/hematite (SiO2)
mineral
Scolecite
Scolecite (CaAl2Si3O10·3H2O)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2)
mineral
Quartz (Smoky/Rose Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Prehnite with Epidote
Prehnite (Ca2Al(AlSi3O10)(OH)2) with Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
mineral
Botryoidal Quartz or Chalcedony
Silicon Dioxide (SiO2)
mineral
Tanzanite
Blue Zoisite (Ca2Al3(SiO4)3(OH))
gemstone
Pink Spinel
Magnesium Aluminum Oxide (MgAl2O4)
gemstone
Amethyst Geode
Amethyst/Purple Quartz (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Druzy Quartz (on Chalcedony/Agate base)
Silicon Dioxide (SiO2)
mineral
Emerald in Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Garnetiferous Quartzite (Garnet Gneiss Pebble)
Garnet-bearing Quartzite or Quartz-Feldspar Gneiss
metamorphic
Sunstone
Oligoclase (Plagioclase Feldspar) - (Ca,Na)(Al,Si)4O8 with Hematite or Copper inclusions
mineral
Peridot
Olivine (Mg, Fe)2SiO4
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral