Mineral Group

Schist

Mica Schist

Olivine-bearing Basalt / Scoria

Mafic Igneous Rock (primarily (Mg, Fe)2SiO4)

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz (Milky or Cloudy variety)

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble

Silicon dioxide (SiO2)

Quartz Pebble (with Iron Inclusions)

Silicon Dioxide (SiO2)

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Chrysocolla

Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O

Aquamarine

Beryl (Be3Al2Si6O18)

Goethite (Iron Ore)

Goethite (FeO(OH))

Mixed Gemstone Collection

SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)

Dendritic Agate

Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Sandstone with Quartz Vein

Arenite with SiO2 intrusion

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz Geode (Nodule)

Silicon Dioxide (SiO2)

Sandstone with Concretions / Liesegang Rings

Arenite with iron oxide banding

Banded Rhyolite (likely Green Jasper/Agate variety)

Silicon Dioxide (SiO2) with mineral inclusions

Marble

Metamorphic rock composed of Recrystallized Carbonate Minerals (chiefly CaCO3)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Turquoise (Rough Specimens)

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

Sapphire (Raw/Rough)

Corundum (Al2O3)

Iron (Hematite variety)

Iron (Fe) / Hematite (Fe2O3)

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Sandstone (Ferruginous)

Arenite (with Iron Oxides)

Turquoise

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

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)

Red Sandstone

Sandstone (principally Quartz with Iron Oxide coating)

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Limonitic Sandstone (Stained Sandstone)

Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Red Sandstone (Hematitic)

Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)

Sandstone (Ferruginous)

Arenite (with Goethite/Limonite cement)

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

Gossan (Iron Hat) with Quartz and Chlorite

Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite

Quartz with mica and feldspar (Pegmatite fragment)

Granitic Pegmatite (composed mainly of SiO2 with KAlSi3O8)

Fossilized Shark Tooth (Basal Bone)

Otodus sp. (Mineralized Hydroxyapatite)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive)