Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Category
This Appears To Be A Man Made Metallic Object, Likely Jewelry, Not A Natural Rock, Mineral, Or Geological Specimen.
Browse this appears to be a man made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen. specimens identified by the Rock Identifier community.
Diamond
Diamond (C)
mineral
Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Blue Quartzite (Dyed)
Silicon Dioxide (SiO2) with inclusions
metamorphic
Gold Ore (Lode Gold)
Native Gold (Au) in Matrix
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Amethyst (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Amethyst (Tumbled Quarz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz with Tourmaline and Iron Staining
Silicon Dioxide (SiO2) with Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
igneous
Amazonite
Amazonite (Microcline) - K(AlSi3O8)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Diamond (in jewelry setting)
Carbon (C)
mineral
Ruby (in jewelry)
Corundum (Al2O3 with Chromium traces)
mineral
Pearl
Calcium Carbonate (Aragonite) - CaCO3
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Double-Terminated)
Silicon Dioxide (SiO2)
mineral
Sunstone
Oligoclase (Plagioclase Feldspar), (Na,Ca)(Si,Al)4O8
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Cubic Zirconia (as a jewelry specimen)
Zirconium dioxide (ZrO2)
mineral
Mica Schist
Mica Schist (Quartz-Biotite-Muscovite Schist)
metamorphic
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Pearl
Calcium Carbonate (primarily Aragonite and Calcite), CaCO3
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
mineral
Quartz (Smoky/Grey Variety)
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate (Microcline)
mineral
Obsidian
Obsidian (Volcanic Glass)
igneous
Sunstone
(Ca,Na)(Al,Si)4O8 (Oligoclase or Andesine)
mineral
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium
mineral
Quartz Pebble (with probable iron staining)
Silicon dioxide (SiO2)
mineral