Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Category
Metamorphic And Igneous
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Greenstone (Epidosite)
Epidosite (Metamorphosed Basalt/Diabase)
metamorphic
Muscovite Mica (in Quartz matrix)
Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)
mineral
Garnet and Quartz
Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Greenschist
Greenschist facies rock (containing chlorite, actinolite, and epidote)
metamorphic
Muscovite Mica
KAl2(AlSi3O10)(F,OH)2
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Magnetite (Iron Ore)
Iron(II,III) oxide (Fe3O4)
mineral
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
mineral
Garnet
Almandine formula: Fe3Al2(SiO4)3
mineral
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Sand and Gravel (Quartz-rich)
Unconsolidated fluvial/beach sediment (primarily Silica/SiO2)
sedimentary
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Feldspar (Orthoclase/Microcline)
Potassium Feldspar (KAlSi3O8)
mineral
Yellow Sapphire (Corundum)
Corundum (Aluminum Oxide, Al2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone
Adularia / Orthoclase (KAlSi3O8)
mineral
Moonstone (Green Moonstone / Garnierite)
Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Garnierite
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone
Orthoclase Feldspar (formula: (K,Na)AlSi3O8)
mineral
Sapphire
Corundum (Al2O3)
mineral
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral