Mica Schist
Mica Schist (primarily composed of Muscovite/Biotite)
metamorphic
Category
Mineral Health
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Basalt
Basalt (composition of plagioclase feldspar and pyroxene)
igneous
Eudialyte with Syenite
Eudialyte: Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
igneous
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Citrine (Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Granite (Micro-specimen)
Plutonic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Citrine (Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Heat-Treated Citrine (Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Citrine (likely Heat-Treated)
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Iron, or Manganese
mineral
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Fuchsite in Quartz
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Quartz (SiO2)
metamorphic
Dyed Blue Agate Slice
Silicon Dioxide (SiO2) with artificial dye
mineral
Copper Ore with Chrysocolla/Malachite
Hydrated copper phyllosilicate (Chrysocolla) / Copper carbonate hydroxide (Malachite)
mineral
Amazonite
Microcline (KAlSi3O8) with lead impurities
mineral
Beryl (likely Pink/Morganite variety)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
mineral
Amethyst (Chevron Amethyst)
Amethystine Quartz (SiO2)
mineral
Amethyst (Quartz)
Amethyst (SiO2 with iron impurities)
mineral
Citrine
Silicon Dioxide (SiO2) with iron impurities
Mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with impurities of iron)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Calcite in Matrix
Calcium Carbonate (CaCO3) on Sedimentary Host Rock
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Goethite)
mineral
Jasper (specifically Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Labradorite
Labradorite (Plagioclase Feldspar Series: (Ca,Na)(Al,Si)4O8)
mineral
Rose Quartz
SiO2 (Silicon Dioxide with trace Titanium, Iron, or Manganese)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Schorl (Black Tourmaline) in Quartz/Feldspar Matrix
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
mineral
Poppy Jasper
Silicon Dioxide (SiO2) with Hematite and Iron Oxide inclusions
sedimentary
Nuummite
Nuummite (mixture of Anthophyllite and Gedrite)
metamorphic
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
metamorphic
Herkimer Diamond
Quartz (SiO2)
mineral
Quartz / Clear Quartz
Silicon Dioxide (SiO2)
mineral
Bumblebee Jasper
Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)
igneous
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Gold Nugget
Native Gold (Au)
mineral