Metamorphic Rock (Primarily Composed Of Minerals)

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Jasper

Jasper (Silicon Dioxide, SiO2)

Granatic Pegmatite

Pegmatitic Granite

Diorite

Diorite (intermediate intrusive igneous rock)

Quartzite Pebble

Quartzite (SiO2)

Garnet Rhyolite

Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet

Unakite

Unakite (an altered granite composed of Epidote, Orthoclase, and Quartz)

Greenstone

Greenschist / Greenstone (contains epidote, chlorite, and actinolite)

Unakite or Epidosite

Epidosite (Mineral composition: Epidote, Feldspar, and Quartz)

Red Quartzite / Metasandstone River Pebble

Quartzite (primarily SiO2 with hematite inclusions)

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Clear Quartz

Silicon Dioxide (SiO2)

Granodiorite

Granodiorite (calc-alkaline phaneritic igneous rock)

Green Moss Agate

Silicon Dioxide (SiO2) with inclusions of hornblende or chlorite

Beryl (likely Emerald or Aquamarine in matrix)

Beryllium aluminum silicate (Be3Al2Si6O18)

Red Sandstone (Iron-rich)

Ferruginous Sandstone (variable formula, primarily SiO2 + Fe2O3)

Quartzite (specifically Milky Quartz variety)

Quartz (SiO2)

Schist

Mica Schist

Rhodonite

Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2)

Aventurine

Quartzite with inclusions (SiO2 containing Fuchsite chrome mica)

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Glaucophane-bearing Schist (Blueschist)

Blueschist (Glaucophane-Lawsonite Schist)

Granitic Pegmatite

Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8, Mica: KAl2(AlSi3O10)(OH)2)

Yellow Quartzite (Iron-stained)

Quartzite (primarily SiO2 with Fe2O3 staining)

Amygdaloidal Basalt

Vesicular Basalt with secondary mineral infilling (commonly Zeolites, Calcite, or Quartz)

Chert

Silicon dioxide (SiO2)

Quartzite with Chert inclusions

Metamorphosed Quartz-rich Rock (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Turquoise

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

Green Quartzite (with Fuchsite)

Quartzite with Muscovite variety Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Pink Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Galena

Lead(II) sulfide (PbS)

Rough Emerald in Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

Petrified Wood

Silicified Wood (primarily SiO₂ - Silicon Dioxide)

Vesicular Basalt

Extrusive Mafic Igneous Rock (composed of Plagioclase feldspar, Pyroxene, and Olivine)

Marble

Recrystallized Carbonate Rock (CaCO3)

Druzy Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Crystal Variety)

Silicon Dioxide (SiO2)

Basalt with Epidote (Greenstone)

Epidote-bearing Metabasalt