Metamorphic Or Sedimentary Depending On Local Grade

Quartz (Smoky/Milky variety with inclusion)

Silicon Dioxide (SiO2)

Milky Quartz with Matrix

Quartz (Silicon Dioxide, SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Granite Glacial Erratic

Granite (Phaneritic Quartz-Feldspar Plutonic Rock)

Blue Kyanite

Kyanite (Al2SiO5)

Quartz (specifically a water-worn river pebble)

Silicon Dioxide (SiO2)

Pumice

Vesicular volcanic glass

Slate

Slate (Foliated Metamorphic Rock)

Schist

Mica Schist

Feldspathic Granite (likely Syenite or Granite Pegmatite)

Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)

Sapphirine in Matrix

Sapphirine (Mg,Al)8(Al,Si)6O20

Blue Calcite

Calcium Carbonate (CaCO3)

Green Aventurine

Aventurine Quartz (SiO2 with fuchsite inclusions)

Schist

Mica Schist

Schist

Schist (various mineralogical compositions including mica, chlorite, talc, etc.)

French Bulldog (Blue Variety)

Canis lupus familiaris

Mica Schist with Garnet inclusions

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

Basalt

Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)

Ferruginous Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Garnet Schist

Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)

Greenstone Celt (Polished Stone Axe)

Metamorphosed mafic rock (often Basalt or Diabase)

Garnet Schist

Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)

Quartz Pebble

Silicon dioxide (SiO2)

Schist

Mica Schist (contains muscovite/biotite and quartz)

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Basalt (Weathered River Stone)

Basalt (Extrusive Mafic Igneous Rock)

Granite Glacial Erratic

Phaneritic Plutonic Felsic Rock (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 – SiO2)

Ruby (set in a gold pendant)

Ruby (Variety of Corundum, Al2O3)

Marble

Metamorphosed Limestone (principally CaCO3)

Slate

Foliated Metamorphic Rock (composed mainly of clay minerals or micas)

Slate

Foliated low-grade metamorphic rock

Zoisite with Ruby (Anyolite)

Zoisite – Ca2Al3(SiO4)3(OH) with inclusions of Ruby (Al2O3:Cr)

Sunstone

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

Schist

Mica Schist (variety: Muscovite/Biotite Schist)

Gold Ore in Matrix

Native Gold (Au) in Quartz/Limonite host rock

Epidote in Granite Gneiss

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

Serpentinite (often called Jade or Nephrite substitute)

Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide - SiO2)

Rhodonite

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

Almandine Garnet in Schist

Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Green Slag Glass

Amorphous Silica Glass (Anthropogenic)