Mineral (Chalcedony)

Quartz (White/Milky Pebble)

Silicon Dioxide (SiO2)

Orange Calcite

Calcite (CaCO3)

Basalt with Quartz Vein

Mafic Igneous Rock (SiO2 filling)

Gneiss (with Quartzite and Biotite)

Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Conglomerate

Conglomerate (clastic sedimentary rock)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Garnet

Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3

Quartz Geode

Silicon Dioxide (SiO2) in a concretionary structure

Epidote

Epidote Group (e.g., Clinozoisite, Epidote, Piemontite), Epidote formula: Ca2(Al,Fe)3(SiO4)3(OH)

Sandstone (Ferruginous)

Arenite (SiO2 with iron oxide impurities)

Quartz (specifically Milky or Clear Quartz fragment)

Silicon Dioxide (SiO2)

Schist

Mica Schist

Garnet (specifically Almandine)

Almandine - Fe3Al2(SiO4)3

Bornite

Bornite (Cu5FeS4)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Schist

Mica Schist

Amygdaloidal Basalt

Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)

Schist

Mica Schist

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

Quartz Geode

Silicon Dioxide (SiO2)

Amazonite

K(AlSi3O8) - Lead-bearing Microcline (Tectosilicate)

Prehnite

Prehnite Ca2Al2Si3O10(OH)2

Quartz Geode

Silicon Dioxide (SiO2)

Basalt with Amygdules

Amygdaloidal Basalt

Amazonite

Amazonite (KAlSi3O8 – a variety of Microcline, a Potassium Feldspar)

Sandstone

Sandstone (clastic sedimentary rock)

Azurite

Azurite (Cu3(CO3)2(OH)2)

Milky Quartz

Silicon Dioxide (SiO2)

Tiffany Stone

Fluorite Opal (a complex mix of Fluorite, Opal, Calcite, Dolomite, Quartz, and Bertrandite)

Gneiss with Orthoclase Feldspar

Gneissic Metamorphic Rock with K-Feldspar inclusions

Granite

Granite (High-silica plutonic rock)

Ruby (varieties of Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Gneiss

Gneiss (High-grade Metamorphic Rock)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Himalayan Pink Salt

Halite (NaCl) with trace minerals (Iron, Magnesium, Potassium)

Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)

Mixed Silicates and Oxides (predominantly SiO2 group minerals)

Peach Moonstone

Orthoclase (KAlSi3O8)

Moonstone

Orthoclase and Albite (KAlSi3O8 / NaAlSi3O8)

Garnet

Almandine (Fe3Al2(SiO4)3)

Sodalite

Na8(Al6Si6O24)Cl2

Amethyst

Silicon Dioxide (SiO2)