Sedimentary Or Igneous (Host Environment)

Muscovite Mica

Muscovite: KAl2(AlSi3O10)(OH)2

Epidote-bearing Granite (Unakite-like)

Epidotized Granite

Milky Quartz

Silicon Dioxide (SiO2)

Quartz

SiO₂ (Silicon Dioxide)

Sandstone (Ferruginous)

Arenite (Fe-oxide cemented)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Schist

Mica Schist

Schist

Schist (metamorphic rock)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Fieldstone/Pebble)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Shungite

Non-crystalline carbonoid (Shungite)

Educational Geologic Collection

Mixed Mineral and Rock Collection (Various compositions)

Granite or Granitic Gneiss

Granitoid / Gneiss

Gneiss

Gneiss (High-grade metamorphic rock)

Blue Calcite

Calcium Carbonate (CaCO3)

Green Fluorite

Calcium Fluoride (CaF2)

Native Gold Nugget

Native Gold (Au)

Crazy Lace Agate

Banded Chalcedony (Microcrystalline Quartz, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Amethyst (Geode)

Silicon Dioxide with Iron impurities (SiO2)

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Red Quartzite / Ferruginous Sandstone

Quartzite (SiO2 with iron oxide impurities)

Orange Calcite

Calcium Carbonate (CaCO3)

Quartz Druze (Crystalline Quartz)

Silicon Dioxide (SiO2)

Rose Quartz

Quartz (Silicon Dioxide) - SiO2

Lapis Lazuli

Complex mixture containing Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite

Dalmatian Stone

Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

River Pebble (Gneiss or Quartzite variant)

Course-grained Metamorphic Rock (likely SiO2 dominant)

Quartz Pebble

Silicon Dioxide (SiO2)

River Pebble (Quartzite/Chert)

Quartzite with inclusions (SiO2)

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

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

Quartz

Silicon dioxide (SiO2)

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Biotite (Black Mica)

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

Amethyst

SiO2 (Silicon Dioxide)

Garnet

Garnet group [X3Y2(SiO4)3]

Quartz (Microcrystalline/Gravel)

Silicon Dioxide (SiO2)