Mineral (Native Element Alloy)

Sandstone with Iron Staining

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Malachite

Copper carbonate hydroxide [Cu2CO3(OH)2]

Lepidolite

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

Sandstone (Red)

Arenite (composed primarily of SiO2)

Glauconitic Sandstone

Glauconitic Sandstone (complex silicate formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Turquoise

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

Sandstone

Arenite

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Sandstone (Ferruginous)

Arenite (Fe2O3 enriched)

Limonite Concretion

Goethite-rich Concretion (FeO(OH))

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Turquoise

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

Red Sandstone

Arenite (Ferruginous Sandstone)

Red Sandstone

Arenite (Ferruginous Sandstone)

Turquoise (Rough Specimens)

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

Sandstone (Wonderstone)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Ferruginous Sandstone

Sandstone with Iron Oxide (Limonite/Goethite)

Granite Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz River Pebble

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)

Silica (SiO2) and Calcium Fluoride (CaF2) based minerals

Pyrite cluster (iron pyrite)

Pyrite, FeS₂

Chalcopyrite

Chalcopyrite (CuFeS2)

Blue Apatite

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

Chrysoprase

Chalcedony with nickel impurities (SiO2)

Satin Spar (Selenite variant)

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Eudialyte

Na15Ca6(Fe2+,Mn2+)3Zr3(Si,Nb)Si25O73(O,OH,H2O)3(Cl,OH)2

Limonite-stained Quartz

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

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Dyed Howlite (simulating Lavender/Purple Jade or Charoite)

Howlite: Ca2B5SiO9(OH)5 (when natural)

Banded Gneiss (with possible weathered sulfide or iron staining)

Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides

Polished pink-and-white quartz bead bracelet

Quartz (SiO₂), likely rose quartz and milky quartz; some orange beads may be iron-stained quartz or pale carnelian

Amethyst

Amethyst (Silicon Dioxide - SiO2 with iron impurities)

Amethyst (Quartz Variety)

Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)

River Stone / Pebble

Clastic Sediment (composed largely of Quartz, Feldspar, and various rock fragments)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz Vein in Host Rock

Silicon dioxide (SiO2) veining in silicate matrix

Jasper

Silicon dioxide (Quartz variety), SiO2

Copper Ore Specimen with Malachite

Cuprite, Malachite, and Limonite matrix

Jasper and Agate Mix

Silicon dioxide (SiO2) - Microcrystalline Quartz

Geode

Quartz / Chalcedony nodule