Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)

Muscovite

Muscovite (KAl2(AlSi3O10)(OH)2)

Basalt Pebble

Extrusive Igneous Rock

Chert (Yellow Jasper)

Cryptocrystalline Quartz (SiO2)

Epidote

Calcium aluminum iron silicate (Ca2(Al, Fe)3(SiO4)3(OH))

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Labradorite

(Ca,Na)(Al,Si)4O8 (Plagioclase Feldspar)

Serpentine

(Mg,Fe)3Si2O5(OH)4

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Coquina

Coquina Limestone

Schist

Mica Schist (Metamorphic rock)

Biotite or Phlogopite Mica

K(Mg,Fe)3(AlSi3O10)(F,OH)2

Green Mica Schist

Mica Schist (Fuchsite or Chlorite variety)

Greenschist (Chlorite Schist)

Greenschist (containing Chlorite, Actinolite, and Epidote)

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Green Schist

Greenschist (composed of chlorite, epidote, and actinolite)

Serpentine (Serpentinite)

Hydrous magnesium iron silicate, (Mg,Fe)3Si2O5(OH)4

Sunstone

Oligoclase (Plagioclase Feldspar subclass), (Ca,Na)(Al,Si)4O8

Amethyst crystal

Silicon Dioxide (SiO2) with iron impurities

Quartz with Muscovite Mica

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

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Greenschist

Chlorite Schist

Iolite (Cordierite)

Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18

Green Gneiss or Greenschist

Chlorite/Actinolite Gneiss or Schist

Epidote

Epidote (Ca2(Al, Fe)3(SiO4)3(OH))

Green Schist

Greenschist (Chlorite Schist)

Rose Quartz

Silicon dioxide (SiO2)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Dalmatian Stone

Dalmatian Jasper (actually a Peralkaline Igneous Rock)

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Basalt cobble

Basalt; predominantly plagioclase, clinopyroxene, and often olivine or iron-titanium oxides

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Greenshist / Chlorite Schist

Chlorite schist (contains (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Marble

Metamorphosed Limestone (primarily calcite CaCO3 or dolomite CaMg(CO3)2)

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Fuchsite in Quartz (or Emerald in Fuchsite / Verdite)

Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Quartz Matrix

Muscovite Mica

Muscovite [KAl2(AlSi3O10)(OH)2]

Quartzite Pebble

Quartzite (SiO2)

Biotite Schist

Biotite Schist (Metamorphic Rock featuring K(Mg,Fe)3AlSi3O10(OH)2)

Citrine Geode Fragment

Citrine (Silicon Dioxide with Iron Impurities), SiO2

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Schist

Crystalline Metamorphic Schist

Milky Quartz

Quartz (Silicon Dioxide, SiO2)