Sedimentary Or Metamorphic

Quartz Vein in Mica Schist

Quartz (SiO2) with Muscovite/Biotite Schist

Quartz (Milky/Crystalline)

Silicon Dioxide (SiO2)

Yellow Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Dragon Stone (Dragon Blood Jasper)

Epidote with Pietersite or Red Jasper inclusions (varied SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Clear Quartz (Double Terminated)

Silicon Dioxide (SiO2)

Nephrite Jade

Ca2(Mg,Fe)5Si8O22(OH)2

Garnet-Bearing Schist

Almandine Garnet Micaceous Schist

Cream Marble (Speckled)

Metamorphosed Limestone (mainly CaCO3)

Schist

Mica Schist

Biotite (Black Mica) in Host Rock

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

Rough Citrine Quartz

Citrine (Silicon Dioxide, SiO2 with iron impurities)

Quartzite

Quartzite (SiO2)

Epidote (likely Pistacite in Epidosite rock)

Epidote: Ca2(Al,Fe)3(SiO4)3(OH)

Eclogite

Eclogite (Omphacite + Almandine-Pyrope Garnet)

Unakite (Epidotized Granite)

Epidotized Granite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Quartzite (River Cobble)

SiO2 (Quartz-rich Metamorphic Rock)

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Anthracite Coal

Anthracite (Carbon-based metamorphic rock)

Lapis Lazuli

Lazurite-dominated contact metamorphic rock

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Quartzite (River Cobble)

Metamorphic Rock (composed predominantly of SiO2)

Eclogite

Eclogite (Omphacite-Garnet Metamorphic Rock)

Lapis Lazuli (Tumbled)

Lazurite-dominated contact metamorphic rock

Anthracite Coal

Anthracite (Carbon-rich metamorphic rock)

Anthracite

Anthracite (Carbon-rich metamorphic coal)

River Cobble (Quartzite with Iron Staining)

Metamorphic Quartzite (SiO2 with Fe2O3 inclusions)

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Rhodonite

Rhodonite; (Mn,Fe,Mg,Ca)SiO3

Black Tourmaline (Schorl)

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Calcite

Calcite (Mineral; CaCO₃)

Chlorite (Small Flakes/Sand)

Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Unakite

Epidotized Granite

Quartzite Pebble

SiO2 (Silicon Dioxide)

Rhodonite

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

Ruby

Corundum (Al2O3 with Chromium traces)

Moonstone

Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)