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

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)

Ruby (mounted cabochon)

Corundum, Al₂O₃; red color typically from chromium

Sapphire (likely blue synthetic sapphire or blue glass in a ring)

Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.

Amber

Succinicum (Organic Gemstone - Resinite)

Pink amethyst or pale pink quartz gemstone

Quartz, SiO₂; pink coloration may result from microscopic inclusions or irradiation-related defects

Amber

Succinite

Pink Cubic Zirconia (CZ)

Zirconium Dioxide (ZrO2)

Chert (Hag Stone / Hole Stone)

Chert (Cryptocrystalline variety of Quartz, SiO2)

Amber

Succinite (fossilized resin)

Chert (Flint)

Silicon dioxide (SiO2)

Gold-colored gemstone ring, likely citrine or glass imitation

Indeterminate from image; possible quartz (SiO₂) or yellow glass set in gold-colored metal

Turquoise-colored ring stone (possibly turquoise or imitation)

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; identity cannot be confirmed from the image

Quartzite river stone

Quartzite (SiO2)

Faceted glass-like gemstone object

Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Amber

Fossilized Tree Resin (Generic formula roughly C10H16O)

Unidentified polished dark gemstone cabochon

Possibly hematite, obsidian, jet, or dark agate; image insufficient for a definitive identification

Quartzite with inclusions or a banded chert

Quartzite or Chert

Banded Chert / Chalcedony

Silicon Dioxide (SiO2)

Amber

Succinicum (Formula: C10H16O)

Chrysanthemum Stone

Celestine (SrSO4) or Calcite (CaCO3) in Limestone/Porphyry matrix

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Yellow faceted gemstone, likely citrine or yellow beryl

Quartz (SiO₂), if citrine; beryl (Be₃Al₂Si₆O₁₈), if heliodor

Amber

Succinite (specifically for Baltic amber); C10H16O (Variable organic compound)

Clear Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2)

Yellow chalcedony (likely lemon agate or yellow jasper)

Microcrystalline quartz, SiO₂; possibly iron-bearing jasper or chrysoprase-like chalcedony

Blue slag glass / industrial glass fragment

Artificial silicate glass, composition variable; likely copper- or cobalt-colored furnace slag

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Chert (Flint)

Microcrystalline Quartz (SiO2)

Amber (Cherry Amber)

Succinite (C10H16O)

Red gemstone ring, likely synthetic ruby or garnet

Ruby: corundum (Al₂O₃); possible alternative: almandine garnet (Fe₃Al₂(SiO₄)₃)

Turquoise

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

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Tumbled milky quartz pebble

Quartz, silicon dioxide (SiO₂)

Clear Quartz

Silicon Dioxide (SiO2)

River Stone (likely Mudstone or Siltstone)

Lutite (Clastic sedimentary rock composed of clay and silt-sized particles)

Red Jasper

Red Jasper (SiO2 with Hematite inclusions)

Yellow Quartz (or Citrine Quartz)

Silicon Dioxide (SiO2)