Amber with dark mineral/organic inclusions
Fossilized plant resin (amber; chiefly polymerized diterpenoid resin)
gemstone
Category
Mineral (Organic)
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Fossilized Shark Tooth or Bone Fragment
Vertebrate Fossil (likely Carcharodon or similar genus)
fossil
Soil with Mineral Detritus and Quartz Fragments
Regolith / Silicate Mineral Aggregate
sedimentary
Likely weathered limestone or marble fragment
Calcite-rich carbonate rock; likely limestone (CaCO₃), possibly recrystallized marble
sedimentary
Natural or Cultured Pearl
Calcium Carbonate (Aragonite and Conchiolin), CaCO3
Mineral (Organic)
Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Mineral (Organic Gemstone)
Precious Red Coral
Corallium rubrum / Corallium japonicum
mineral (organic gemstone)
Coral (Precious Coral)
Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).
Mineral, Organic Gemstone
Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)
Chert (microcrystalline quartz)
Metamorphic Rock
Amber (Copal)
Fossilized Tree Resin
mineraloid
Amber
Succinite (formula varies, primarily C10H16O)
Mineraloid (Organic)
Amber (Raw)
Succinite (Fossilized Resin)
mineraloid
Amber and Citrine Quartz
Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)
mineral
Amber
Succinite (fossilized resin, C10H16O)
mineral
Amber
Succinicum (C10H16O)
mineral
Petrified Wood
Silicified wood (Quartz replacement, SiO2)
fossil
Raw Amber / Resin Mineral
Succinite (Fossilized Tree Resin)
gemstone
Amber
Succinite (C10H16O)
mineraloid
Amber
Resinite / Fossilized Tree Resin
mineral
Kidney Stone
Nephrolithiasis (Calcium Oxalate, Hydroxyapatite, or Uric Acid)
mineral
Amber
Succinite (Fossilized Tree Resin)
mineraloid
Polished amber
Amber (fossilized plant resin; chiefly amorphous organic compounds)
gemstone
Amber cabochon pendant
Amber (fossilized tree resin; chiefly polymerized terpenoids)
gemstone
Weathered Sedimentary Rock
Sedimentary Rock
Sedimentary
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Fossilized Bone
Petrified Bone / Biogenic Sedimentary
fossil
Amber
Succinite (specific to Baltic amber), fossilized tree resin
Organic Mineraloid
Amber
Succinite (organic hydrocarbon)
mineraloid
Fossilized Bone
Vertebrate fossil (mineralized bone)
fossil
Amber
Succinite (with empirical formula approximately C10H16O)
Organic Mineraloid
Likely bituminous coal
Coal, predominantly carbon-rich organic matter; exact rank cannot be confirmed from the image
sedimentary
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Amber
Succinite
Organic mineraloid
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
mineral
Amber (Copal)
Succinate (Fossilized Tree Resin)
mineraloid
Black Limestone
Bituminous Limestone (Calcium Carbonate - CaCO3)
sedimentary
Chert (Jasper/Chalcedony mix)
Microcrystalline Quartz (SiO2)
sedimentary
Limestone or Sandstone Cobble
Sedimentary rock (Calcium carbonate or Quartz based)
sedimentary
Amber
Succinite (Approximate formula: C10H16O)
mineral
Pearl
Organic Mineral (CaCO3 with conchiolin)
mineral
Ironstone concretion / Limonitic Sandstone
Goethite/Hematite Cemented Sandstone (Hydrated Iron Oxide)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil