Organic (If Resin) Or Synthetic (If Glass); Simulating Sedimentary Or Metamorphic (For Natural Stones)

Agate with Fossil/Inclusion

Silicon Dioxide (SiO2) with chalcedony and potential fossil inclusion

Blue-green faceted gemstone, likely turquoise or treated turquoise

Turquoise: hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification is uncertain from the image

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2)

Green Jasper

Jasper (Silicates, SiO2)

Gneiss (Banded Gneiss Cobble)

Gneiss

Aventurine

Silicon Dioxide (SiO2 with inclusions of Fuchsite mica)

Iron-stained Quartzite

Metamorphic Quartz (SiO2) with limonite/hematite staining

Mixed polished gemstone and mineral collection

Primarily quartz varieties (SiO₂), plus probable aventurine, rose quartz, amethyst, agate, jasper, serpentine, feldspar, and possibly dyed or man-made glass pieces

Polished tiger iron carving

Tiger iron, chiefly hematite–jasper–crocoite/goethite-rich ironstone; composition is uncertain from the image

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Faceted citrine-colored gemstone (likely synthetic/display stone)

Quartz, SiO₂, if natural citrine; possibly synthetic sapphire or glass imitation

Quartz Pebble

Silicon Dioxide (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Tumbled yellow quartz (likely citrine or iron-stained quartz)

Quartz, silicon dioxide (SiO₂), colored yellow by iron impurities; possibly heat-treated amethyst

Quartz (Smoky/Grey variety)

Silicon Dioxide (SiO2)

Amethyst and mixed gemstone bracelet

Amethyst: purple quartz, silicon dioxide (SiO₂); likely accompanied by other quartz or decorative mineral beads

River Pebble (Gneiss or Quartzite mixture)

Metamorphic rock (Commonly Gneissic)

Blue Agate (Tumbled and Dyed)

Silicon Dioxide (SiO2) with likely organic dyes

Faceted pale-green gemstone, likely prasiolite or green quartz

Quartz (SiO₂), likely prasiolite; identification is uncertain from the photograph

Yellow Quartzite Pebble

Quartzite (SiO2)

Citrine

Citrine (Silicon Dioxide, SiO2)

Decorative orb of likely sodalite-bearing rock or dyed stone

Most consistent with sodalite-rich nepheline syenite or a blue-and-white composite; exact identification requires testing

Pickled Dragon Eggs (Fictional Interpretation: Purple Agate or Amethyst Geodes)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Opal cabochon

Opal, hydrated amorphous silica (SiO₂·nH₂O), likely common or Ethiopian precious opal

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Quartz Pebble

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Smoky Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Citrine

Silicon Dioxide (SiO2)

Amber

Succinite (C10H16O)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Flint (chert), likely a worked or fractured nodule

Microcrystalline quartz/chalcedony (SiO₂)

Citrine Quartz

Citrine (Silicon Dioxide, SiO2)

Chert (Flint variety)

Chert (Cryptocrystalline Quartz, SiO2)

Hag Stone (Holed Quartzite Pebble)

Quartzite (SiO2 based) with natural vug or erosion hole

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Faceted clear gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂); exact identification requires refractive-index and hardness tests

Tumbled honey calcite

Calcite (calcium carbonate, CaCO₃)