Metamorphic Rock (Primarily Composed Of Minerals)

Quartz (Milky/Vein Quartz)

Silicon Dioxide (SiO2)

Rhodonite

Manganese Silicate (Mn, Fe, Mg, Ca)SiO3

Ferruginous Quartzite (also known as Ironstone or Gossan)

Ferruginous Quartzite with Goethite/Hematite staining

Schist

Mica Schist

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Red Garnet

Almandine Garnet (Fe3Al2(SiO4)3)

Quartz Pebble (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granite

Granite (Felsic Plutonic Rock)

Sandstone (with Concretion)

Arenite / Quartzose Sandstone

Dumortierite Quartz

Dumortierite-bearing Quartz (Al7BO3(SiO4)3O3)

Serpentine (variety: Serpentine Rock)

Antigorite, Lizardite, or Chrysotile; formula generally (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Granite

Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O, Na2O)

Labradorite

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

Ruby

Corundum (Al2O3 with Chromium traces)

Basalt with Amygdules

Amygdaloidal Basalt

Citrine

Silicon dioxide (SiO2)

Greenstone / Greenschist

Chlorite schist / Meta-basalt

White Chalcedony (likely Common Opal or Milky Quartz)

Silicon Dioxide (SiO2)

Orthoclase Feldspar

Potassium Aluminum Silicate (KAlSi3O8)

Milky Quartz (among River Rock)

Quartz (Silicon Dioxide, SiO2)

White Marble

Recrystallized Calcite (CaCO3)

Sandstone

Arenite

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Sunstone (variety of Feldspar)

Oligoclase Sunstone, Plagioclase Feldspar (Na,Ca)Al(Si,Al)Si2O8

Rough Gemstone Grains (Mixed Sapphires and Quartz)

Corundum (Al2O3) and Quartz (SiO2)

Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Moonstone

Adularia (orthoclase) or Albite (plagioclase), a feldspar mineral (KAlSi3O8 or NaAlSi3O8 respectively, often a mixture)

Quartz (Milky/Yellowish variety)

Silicon Dioxide (SiO2)

Schist

Mica Schist

Native Sulfur

Sulfur (S)

Quartz / Iron-Stained Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions/staining

Staurolite (Fairy Cross)

Staurolite (Fe2+2Al9Si4O23(OH))

Quartz (specifically Milky or Clear Quartz)

Silicon Dioxide (SiO2)

Banded Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive volcanic rock)

Gneiss (Banded Gneiss)

Gneiss