Epidotite (Unakite-related Epidote)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
metamorphic
Category
Igneous, Metamorphic, And Sedimentary
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Pyrite in Slate
Iron Disulfide (FeS2) in Low-grade Metamorphic Rock
metamorphic
Ruby in Zoisite
Ruby (α-Al2O3) embedded in Zoisite (Ca2Al3(SiO4)3(OH)) with some Hornblende
Metamorphic Rock (composed of multiple minerals)
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (or Fool's Gold)
Pyrite (FeS₂)
Mineral
Leopard Skin Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Green Schist
Greenschist (composed of chlorite, epidote, and actinolite)
metamorphic
Serpentine
Antigorite-Lizardite-Chrysotile (Mg3Si2O5(OH)4)
metamorphic
Magnetite
Magnetite (Fe3O4)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Green Quartz (Prasiolite or Aventurine)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2) with Fe3+ impurities
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with natural radiation treatment
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Banded Agate (Dyed)
Silicon Dioxide (SiO2) with impurities
mineral
Amazonite
Microcline (KAlSi3O8) with trace lead (Pb)
mineral
Aquamarine (Tumbled)
Beryl (Be3Al2Si6O18)
gemstone
Quartz Crystal Cluster on Matrix
Silicon Dioxide (SiO2)
mineral
Citrine (Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Magnetite with Pyroxene
Magnetite (Fe3O4) in Mafic Igneous Matrix
mineral/igneous
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Peacock Ore (Bornite or Chalcopyrite treated with acid)
Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)
mineral
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Smoky Quartz (Rough Specimen)
Silicon Dioxide (SiO2)
mineral
Garnet (almandine or pyrope variety)
Silicate mineral Group: (Fe, Mg, Mn, Ca)3(Al, Fe, Cr)2(SiO4)3
mineral
Rough Green Sapphire (Corundum)
Corundum (Al2O3 - Aluminum Oxide with trace elements)
mineral
Labradorite (Carved)
(Ca, Na)(Al, Si)4O8
mineral
Milky Quartz Pebbles
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3)
mineral