Sedimentary (Processed Mineral Product)

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Milky quartz / quartz-rich vein rock

Quartz, silicon dioxide (SiO₂), likely massive quartz with minor iron-staining or feldspar

Quartz-bearing metamorphic rock, likely quartzite with dark mica/amphibole

Quartzite or quartz-rich schist; chiefly SiO₂ quartz with biotite, hornblende/amphibole, and iron-oxide staining

Iron-stained quartz-bearing rock (likely gold-bearing quartz vein fragment)

Quartz (SiO₂) with iron oxides/hydroxides, possibly limonite/goethite and minor sulfides

Basalt pebble

Fine- to medium-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine and iron oxides

Quartzite

Quartzite (primarily SiO2)

Dyed or coated quartz geode

Quartz geode; silicon dioxide (SiO₂), likely artificially color-enhanced

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

Tumbled milky quartz pebble

Quartz, silicon dioxide (SiO₂)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Chert (Flint)

Silicon dioxide (SiO2)

Chert (and associated Sedimentary rocks)

Microcrystalline Silica (SiO2)

Chert / Flint

Cryptocrystalline quartz (SiO2)

Chert

Chert (SiO2, Silicon Dioxide)

Gabbro

Gabbro

Granite

Granite (Felsic Plutonic Rock)

Granite

Granite

Pink Granite

Phaneritic Acidic Igneous Rock (Rich in K-feldspar)

Basalt

Basalt (Mafic volcanic rock)

Aventurine (Green)

Silicon Dioxide (Quartz with inclusions of Fuchsite)

Limestone (likely weathered or plaster-coated)

Calcite-rich carbonate rock; primarily CaCO₃

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Chert (specifically Flint or Nodular Chert)

Silicon Dioxide (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Limestone

Calcium Carbonate (CaCO3)

Copper-bearing sulfide ore, possibly chalcopyrite-rich

Chalcopyrite (CuFeS₂), possibly with bornite and oxidation products

Copper-bearing porphyritic rock (likely bornite/chalcopyrite ore)

Altered porphyritic volcanic rock with copper sulfides, chiefly bornite (Cu₅FeS₄) and/or chalcopyrite (CuFeS₂)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Limonite Concretion

FeO(OH)·nH2O (Hydrated Iron Oxide)

Carved translucent jade pendant

Likely nephrite jade (actinolite–tremolite series); possibly jadeite or chalcedony, identification requires testing

Tumbled serpentinite (serpentine stone)

Serpentinite, dominated by serpentine-group minerals (lizardite, chrysotile, antigorite), commonly with magnetite and chromite

Tumbled serpentine

Serpentinite; chiefly antigorite, lizardite, and/or chrysotile serpentine-group minerals

Opalite

Man-made opalized glass

Epidote (Unakite-related)

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Orange Calcite

Calcium Carbonate (CaCO3)

Slag (Industrial)

N/A (Anthropogenic Slag)

Tumbled milky quartz (probable)

Quartz, silicon dioxide (SiO₂)

Sea Glass

Amorphous silicon dioxide (man-made glass weathered by nature)

Weathered porphyritic volcanic rock

Likely porphyritic andesite or basalt; exact identification requires a fresh surface and testing