Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Category
Industrial Byproduct (Anthropogenic Rock)
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Cubic Zirconia
Cubic Zirconium Dioxide (ZrO2)
gemstone
Black Tourmaline (Schorl) on Quartz
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
mineral
Orange Sapphire
Corundum (Al2O3 with trace elements)
gemstone
Diamond (Faceted)
Diamond (Pure Carbon, C)
gemstone
White Topaz (faceted)
Aluminum silicate fluoride hydroxide (Al2SiO4(F, OH)2)
gemstone
Diamond (Set in Jewelry)
Carbon (C)
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
gemstone
Limonite (Ironstone)
Limonite (FeO(OH)·nH2O)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Yellow Sapphire (Raw)
Corundum (Al2O3)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Garnet
Garnet group (X3Y2(SiO4)3)
mineral
Pegmatite (Granitic)
Granite Pegmatite
igneous
Red Garnet (Pyrope or Almandine)
Garnet Group (A3B2(SiO4)3)
mineral
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Rough Quartz
Silicon Dioxide (SiO2)
mineral
Diamond (in jewelry)
Element Carbon (C)
mineral
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Mineral
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Limestone Pebble
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Diamond (in jewelry setting)
Diamond (C - Pure Carbon)
mineral
Garnet (Pyrope-Almandine series)
Garnet Group, (Mg,Fe)3Al2Si3O12
mineral
Black Tourmaline (Schorl)
Sodium Iron Aluminum Borosilicate (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
mineral
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Banded Iron Formation (BIF) / Jasper
Banded Iron Formation (SiO2 with Fe2O3 and Fe3O4)
sedimentary
Olivine (Peridotite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Limestone (containing Fossil Mold)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Stilbite
Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)
mineral
Pegmatite
Granitic Pegmatite
igneous
Quartzite (River Pebble)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Silver (Native or Alloyed)
Ag (Argentum)
mineral
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Quartzite
metamorphic
Diamond
Diamond (C)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Amethyst (Raw Quartz)
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
mineral
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral