Metamorphic Mineral

Banded metamorphic pebble, likely gneiss

Quartz–feldspar–mica gneiss (tentative identification)

Quartzite Cobble

Metamorphic Quartzite (SiO2)

Gneiss (Metamorphic Pebble)

Gneissic Metamorphic Rock

Wavellite with Quartz

Al3(PO4)2(OH,F)3 & SiO2

Hessonite garnet in matrix

Hessonite, a grossular garnet; Ca₃Al₂(SiO₄)₃

Reddish-brown crystalline rock, possibly weathered granite or garnet-bearing schist

Indeterminate; likely quartz–feldspar–mica rock with iron oxides, potentially garnet-bearing

Milky Quartz

Silicon Dioxide (SiO2)

Tumbled banded gneiss or amphibolite

Banded metamorphic rock, likely quartz–feldspar–biotite gneiss with amphibole

Banded gneiss

Gneiss, commonly quartz–feldspar–biotite gneiss

Small gray-green tumbled stone, likely serpentine

Serpentine-group minerals, approximately Mg₃Si₂O₅(OH)₄; identification is uncertain from the image alone

Banded gneiss

Foliated gneiss, likely quartz–feldspar–biotite gneiss

Likely banded gneiss

Gneiss (quartz–feldspar–mica-rich rock; exact identification uncertain from the photo)

Banded metamorphic rock, likely gneiss or schist

Foliated quartz–feldspar–mica rock; exact identification requires a closer view or mineral testing

Banded gneiss

Foliated gneiss, likely quartz–feldspar–mica gneiss

Gneiss

Gneiss (Metamorphic high-grade)

Schist

Schist (Crystalline metamorphic rock)

Fuchsite

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH,F)2 with Cr replacements)

Tumbled Mixed Gemstones and Rocks

Various mineral species including quartz (SiO2) and silicate minerals

Likely magnetite-rich rock fragment

Magnetite (Fe₃O₄), possibly in a fine-grained host rock

Gold Mineral

Native Gold (Au)

Gneiss (with Quartzite layers)

Gneissic Metamorphic Rock

Chalcopyrite in Quartz matrix

Chalcopyrite (CuFeS2) with secondary Malachite (Cu2CO3(OH)2)

Pyrite

Iron Disulfide (FeS2)

Greenstone

Metabasalt / Chlorite-actinolite-epidote schist

Likely serpentine

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; approximate formula Mg₃Si₂O₅(OH)₄

Lapis Lazuli

Lazurite-rich metamorphic rock

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Yellow Aventurine (Yellow Quartzite)

Silicon Dioxide (SiO2) with inclusions

Blue Apatite

Apatite, Ca5(PO4)3(F,Cl,OH)

Quartz pebble

Silicon dioxide (SiO2)

Vein-bearing metamorphic rock, likely gneiss or schist

Banded silicate rock; likely quartz–feldspar–mica gneiss with a quartz vein

Jade

There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.

Greenish metamorphic rock (possibly chlorite schist)

Chlorite-rich schist; exact identification is uncertain from the image

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Rhodonite

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

Prehnite

Ca2Al(AlSi3O10)(OH)2

Foliated metamorphic rock (likely mica schist)

Mica schist, typically composed of quartz and mica (muscovite and/or biotite)

Slate

Foliated Metamorphic Rock

Ruby (Raw Corundum)

Al2O3 (Aluminum Oxide)

Gneiss

High-grade Metamorphic Gneiss

Likely biotite-rich schist

Mica schist, probably containing biotite and quartz (exact identification requires testing)

Pink Granite Gneiss

Gneiss (High-grade metamorphic rock)