Metamorphic

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)

Quartzite (Ferruginous)

Recrystallized Quartz (SiO2) with Iron Oxide inclusions

Greenschist

Greenschist (Chlorite Schist)

Quartzite (River Cobble)

Quartzite (Metamorphosed Quartz Sandstone, SiO2)

Quartzite River Rock

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite (or Milky Quartz pebble)

Quartzite (Metamorphosed Sandstone) / Silicon Dioxide (SiO2)

River Cobble (Quartzite)

Quartzite (SiO2)

Blue Quartzite (Aventurine)

Silicon Dioxide (SiO2) with mineral inclusions

Unakite

Epidotized Granite

Garnet (specifically Almandine)

Almandine - Fe3Al2(SiO4)3

Mica Schist

Mica Schist (Complex Silicate Rock)

Schist (Diamond Drill Core)

Mica Schist

Quartzite

Quartzite (primarily SiO2)

Jadeite and Nephrite (Jade)

Sodium Aluminum Silicate (Jadeite) / Calcium Magnesium Iron Silicate (Nephrite)

Schist

Mica Schist (primarily Muscovite and Quartz)

Marble

Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)

Quartzite Pebble

Metamorphic Rock consisting of Quartz (SiO2)

Quartzite with Hematite staining

Metamorphic Quartz (SiO2) with Ferric Oxides

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Eclogite

Eclogite (High-pressure metamorphic rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Green Quartzite (with Hematite inclusions)

Metamorphic Quartz (SiO2) with various inclusions

Gneiss with Quartz Veining

Gneiss (High-grade Metamorphic Rock)

Pink Quartzite

Quartzite (High-silica metamorphic rock)

Quartzite River Rock

Quartzite (SiO2 based metamorphic rock)

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Quartzite with Iron Inclusions

Metamorphic Quartz (SiO2) with Hematite/Limonite

Banded Gneiss and Siltstone River Stones

Gneiss (High-grade Metamorphic Rock)

Granite Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

High-grade metamorphic rock (Gneiss)

Gneiss Pebble

Gneiss (High-grade metamorphic rock)

Eclogite

Eclogite (Omphacite-Garnet Metamorphic Rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartzite Pebble

Metamorphic Rock (composed mainly of SiO2)

Quartzite with Mica

Metamorphic Quartzite (SiO2 + Mica phyllosilicates)

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

High-grade foliated metamorphic rock

Gneiss

Gneiss (High-grade Metamorphic Rock)

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)