Quartz Crystal (specifically a Double-Terminated variety)
Silicon Dioxide (SiO2) - Low Quartz
mineral
Category
Metamorphic Rock (For Both Nephrite And Jadeite)
Browse metamorphic rock (for both nephrite and jadeite) specimens identified by the Rock Identifier community.
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Schorl (Black Tourmaline)
Sodium iron aluminum borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3)
mineral
Quartz (Sand Grain size)
Silicon Dioxide (SiO2)
mineral
Likely tumbled brown jasper or iron-stained quartzite pebble
Jasper (microcrystalline quartz, SiO₂) or quartzite; the photo is not detailed enough to distinguish confidently
metamorphic
Greenstone with Epidote or Quartz Vein
Epidiorite or Metabasalt (composed largely of Chlorite, Epidote, and Amphibole)
metamorphic
Rainbow Moonstone (White Labradorite)
Labradorite (Feldspar family, (Na,Ca)(Al,Si)4O8)
mineral
Herkimer Diamond
Quartz (SiO2)
mineral
Tumbled green stone, likely serpentine
Serpentinite; principally serpentine-group minerals, Mg₃Si₂O₅(OH)₄
metamorphic
Milky and Ferruginous Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Kimberlite
Kimberlite
igneous
Chalcedony on Matrix
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Tumbled green aventurine or quartzite pebble
Quartz (SiO₂), likely aventurine-bearing quartzite
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pearl necklace
Pearl: biogenic calcium carbonate, primarily aragonite (CaCO₃), in a conchiolin matrix
gemstone
Red Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - variety Quartzite
metamorphic
Tumbled sodalite with white calcite veining
Sodalite, Na8(Al6Si6O24)Cl2, commonly intergrown with calcite, CaCO3
mineral
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Tumbled greenstone (likely serpentine)
Serpentinite; mainly serpentine-group minerals, commonly antigorite, lizardite, or chrysotile
metamorphic
Tumbled green stone, likely serpentine
Serpentine-group minerals, chiefly antigorite and/or lizardite; approximate formula Mg₃Si₂O₅(OH)₄
metamorphic
Quartz (Milky/Smoky Crystal fragment)
Silicon Dioxide (SiO2)
mineral
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
mineral
Chalcedony (Agate and Jasper Pebbles)
Microcrystalline Quartz (SiO2)
sedimentary
Fossil shell fragment
Indeterminate molluscan bioclast, likely aragonite or calcite
fossil
Azurite and Malachite
Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)
mineral
Unakite
Unakite (Epidotized Granite)
metamorphic
Tumbled serpentine (likely nephrite-like greenstone)
Serpentine-group minerals, chiefly antigorite/lizardite; exact identification requires testing
mineral
Tumbled green aventurine (probable)
Quartz variety; SiO₂ with disseminated fuchsite or other mica inclusions
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Rough Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate Hydroxide; NaFe2+3Al6Si6O18(BO3)3(OH)3OH
mineral
Tumbled greenstone or serpentine pebble
Likely serpentinite, composed mainly of serpentine-group minerals (antigorite/lizardite); identification is uncertain from the image alone
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Tumbled green stone, likely serpentine
Serpentine-group minerals, chiefly antigorite/lizardite; approximate formula Mg₃Si₂O₅(OH)₄
metamorphic
Tumbled green stone, likely serpentine
Serpentine-group minerals, chiefly antigorite/lizardite; approximate formula Mg₃Si₂O₅(OH)₄
metamorphic
Aquamarine with Sunstone
Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8
Mineral
Clear Quartz Crystal (Herkimer Diamond style)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral