Mineral Based Composite

Muscovite Mica

Muscovite [KAl2(AlSi3O10)(OH)2]

Garden Quartz

Included Quartz (SiO2 with accessory minerals such as Chlorite, Hematite, or Feldspar)

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium aluminum silicate hydroxide fluoride [KAl2(AlSi3O10)(F,OH)2]

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Coarse Sandstone Pebble

Clastic Sedimentary Rock (Sandstone)

Fuchsite

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)

Slate

Foliated Metamorphic Rock

Greenschist

Chlorite schist

Quartzite with Iron Inclusions

Metamorphosed Quartz Sandstone (SiO2 with Fe2O3)

Vesicular Basalt

Aphanitic Mafic Volcanic Rock

Pink Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Milky Quartz with Mica (Gneiss/Schist influence)

Silicon Dioxide (SiO2) with Phyllosilicates

Mica Schist

Schist (Biotite/Muscovite dominant)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Biotite Schist

Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)

Sandstone (Ferruginous)

Clastic Sedimentary Rock (Sandstone)

Magnetite-rich Basalt

Basalt containing Fe3O4

Ironstone (Limonite/Hematite)

Ferruginous Sedimentary Rock (composed largely of Fe2O3 and FeO(OH)·nH2O)

Quartz with Mica

Silicon Dioxide (SiO2) with Phyllosilicates (Mica)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Limonitic/Arkose)

Sandstone (primarily SiO2 with FeO(OH)·nH2O)

Sandstone (Ferruginous)

Arenite (with Iron Oxide)

Ironstone (with possible Hematite/Limonite coating)

Ironstone (Fe-rich sedimentary rock)

River Cobble (Sandstone)

Arenite (primarily SiO2)

Citrine

Silicon Dioxide (SiO₂)

Greenschist

Greenschist (composed mainly of chlorite, epidote, actinolite, and albite)

Diorite

Diorite (Intermediate Plutonic Rock)

Limestone (Ocherous)

Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)

Druzy Quartz (Botryoidal)

Silicon Dioxide (SiO2)

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Vuggy Quartz on Matrix

Silicon Dioxide (SiO2)

Sandstone with Iron Oxide Staining

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Basalt (or similar Mafic Igneous Rock)

Basalt

Basalt

Mafic volcanic rock (primarily Plagioclase and Pyroxene)

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Chalcedony Geode / Quartz Druzy

Silicon Dioxide (SiO2)

Greywacke (River Slikenside)

Greywacke (Lithic Sandstone)

Diorite (or Gabbro/Gneiss stream pebble)

Diorite

Citrine Quartz (Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Greenstone

Metabasalt / Chlorite Schist