Mineral (Silicate Variety)

Eudialyte in Matrix

Eudialyte [Na15Ca6(Fe,Mn)3Zr3(Si25O73)(O,OH,H2O)3(Cl,OH)2]

Limonite (Ironstone)

Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))

Green Jasper

Silicon Dioxide (SiO2) with impurities

Rhodonite

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

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay inclusions

Lepidolite and Rubellite (Pink Tourmaline) in Quartz

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite) and Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite/Pink Tourmaline)

Marble

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Slag (Industrial Byproduct)

Ferrous/Non-ferrous Silicate

Banded Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Dyed Dalmatian Jasper (Dalmatian Stone)

Perthitic Feldspar with Arfvedsonite inclusions

Chakra Tumbled Stone Set

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

Talc

Talc (Mg₃Si₄O₁₀(OH)₂)

Chrysocolla

Chrysocolla; (Cu,Al)2H2Si2O5(OH)4·nH2O

Quartz (Rock Crystal) with minor impurities

Quartz (SiO2)

Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Amazonite

Potassium aluminum silicate (KAlSi3O8)

Rose Quartz

Silicon Dioxide (SiO2)

Diorite

Diorite (an intrusive igneous rock)

Garnet (Almandine/Pyrope series)

Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)

Nephrite Jade

Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2

Chrysocolla

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)

Garnet (likely Almandine or a blend)

Garnet group: X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+. Given the dark, somewhat reddish-brown appearance in the image, it's likely Almandine (Fe3Al2(SiO4)3) or a mix with other iron-rich garnets.

Chrysocolla in Matrix

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)

Lapis Lazuli

Lapis Lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Goethite (Iron Ore)

Goethite (FeO(OH))

Grey Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

Amazonite (likely mixed with other feldspars/minerals)

Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.

African Turquoise (Jasper)

Silicon Dioxide (SiO2) - Macro-crystalline Quartz with inclusions

Bauxite

Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Brecciated Chert

Sedimentary Chert (SiO2) with Calc-Silicate mineralization

Sodalite in Matrix (Sunset Sodalite)

Sodalite Na8(Al6Si6O24)Cl2

Diorite (Salt and Pepper Rock)

Diorite

Sandstone

Arenite (primarily SiO2)

Mahogany Obsidian

Volcanic Glass (Silicate: SiO2 + Fe2O3)

Greenschist / Chloritaform Schist

Chlorite Schist (Group of Silicate Minerals)

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)