Metamorphic Rock (Primarily Composed Of Minerals)

Azurite in Matrix

Azurite (Cu3(CO3)2(OH)2) in Rhyolite or Sandstone matrix

White Quartzite

Quartzite (primarily SiO2)

Blue Apatite

Calcium Fluorophosphate - Ca5(PO4)3F

Amygdaloidal Basalt

Basalt (Igneous Volcanic Rock with secondary mineral infilling)

Pyrite in Slate

Iron Disulfide (FeS2) in Low-grade Metamorphic Rock

Ruby in Zoisite

Anyolite (Calcium Aluminum Silicate with Aluminum Oxide impurities)

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2)

Green Aventurine

Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Granodiorite (Gneissic texture)

Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)

Phyllite

Phyllite (Foliated metamorphic rock)

Quartzite Pebble

Quartzite (SiO2) with mineral inclusions

Dendritic Rhodonite

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

Quartzite with Mica

Metamorphic Quartzite (SiO2 + Mica phyllosilicates)

Sandstone with Ironstone Concretion

Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))

Limonite with Galena

FeO(OH)·nH2O (Limonite) and PbS (Galena)

Shale

Lutaceous Sedimentary Rock

Quartz / Quartzite

Silicon Dioxide (SiO2)

Quartz with Limonite Staining

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)

Green Kyanite

Kyanite (Al2SiO5)

Schist

Schist (various mineral compositions)

Unakite

Epidotized Granite

Quartz Vein in Rhyolite

Silicon Dioxide (SiO2) in extrusive igneous rock

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Porphyry (likely Porphyritic Andesite or Basalt)

Porphyritic Igneous Rock

Tiger Iron / Banded Iron Formation

Banded Iron Formation (SiO2 with Fe2O3 and FeOOH)

Eclogite

Eclogite (Omphacite-Garnet Metamorphic Rock)

Unakite

Unakite (Epidotized Granite)

Grey Slate

Foliated Metamorphic Rock (formed by low-grade regional metamorphism of shale or mudstone)

Sandstone Pebble with Iron Staining

Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)

Dalmatian Jasper

Peralkaline rhyolite

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Mica Schist

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

Granite

Phaneritic plutonic felsic rock (primarily Quartz, Feldspar, and Mica)

Turquoise in Matrix

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

Chakra Tumbled Stone Set

Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)

Chert (Commonly known as Flint)

Microcrystalline Quartz (SiO2)

Basalt with Quartz/Calcite Inclusion

Aphanitic Mafic Igneous Rock (Basalt) with SiO2 or CaCO3 vein

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Limonite inclusions

Orbicular Granite

Orbicular Granidiorite / Plutonic Igneous Rock

Ferruginous Quartz

Quartz (Silicon Dioxide) - SiO2 with Iron Oxide inclusions

Quartzite

Quartzite (primarily SiO2)