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

Quartz (Common Milky Quartz)

Silicon Dioxide (SiO2)

Mica Schist

Crystalline Schist (often containing Muscovite, Biotite, and Quartz)

Parti Sapphire

Corundum (Al2O3)

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Diorite

Diorite (Intermediate intrusive igneous rock)

Basalt

Basalt (Mafic volcanic rock)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Schist

Mica Schist (Group of medium-grade metamorphic rocks)

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)

Glacial Cobble (likely Granitic or Gneissic)

Granite/Gneiss Glacial Erratic

Schist

Mica Schist (primarily Muscovite and Quartz)

Milky Quartz

Silicon Dioxide (SiO2)

Blue Apatite

Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Granite

Granite (Phaneritic Quartz-Feldspar Felsic Rock)

Fluorite (left), Sodalite (middle), Dumortierite/Tumbled Quartzite (right)

Calcium Fluoride (CaF2), Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2), Aluminum Borosilicate (Al7(BO3)(SiO4)3O3)

Lapis Lazuli

Lapis Lazuli (Primary mineral: Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2)

Spessartine Garnet

Manganese aluminum silicate (Mn2+3Al2(SiO4)3)

Basalt

Basalt (Mafic volcanic rock)

Quartz on Schist

Silicon Dioxide (SiO2) on Foliated Metamorphic Rock

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

River Stone (Granitic Gneiss)

Foliated Granitic Gneiss

Rhodonite

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

Schist (specifically Mica Schist)

Mica Schist (primarily composed of Muscovite KAl2(AlSi3O10)(OH)2 and Biotite)

Schist (Garnet-Mica Schist)

Garnet-Mica Schist (X-Y)3Z2(SiO4)3

Schist

Mica Schist (contains muscovite/biotite and quartz)

Unakite

Unakite (Epidotized Granite)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz Pebble

Silicon Dioxide (SiO2)

Mahogany Obsidian

Volcanic glass containing Magnetite/Hematite

Dragon Blood Jasper

Epidote with Red Piedmontite (Chalcedony/Quartz variant)

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Serpentine

Serpentine group, including Antigorite, Lizardite, and Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Blue Calcite

Calcite (CaCO3)

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Schist (Micaceous)

Mica Schist

Schist (Biotite/Mica Schist)

Medium-grade regional metamorphic rock (rich in Phyllosilicates)

Anthracite Coal

Anthracite (Carbon-based sedimentary-metamorphic rock)