Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite
Mineral (variety of Chalcedony)
Category
Sedimentary (Fossilized Organic Matter)
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Moss Agate with Quartz Druzy
Chalcedony with inclusions (SiO2)
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Fe/Mg/Mn/Chlorite)
mineral
Shark Tooth Fossil
Otodus obliquus (or similar prehistoric lamniform shark tooth)
fossil
Amber
Succinite (fossilized resin)
Organic Mineraloid
Fossilized Coral
Anthozoa (Fossilized)
Sedimentary / Fossil
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
mineral
Amber
Succinit (C10H16O)
mineraloid
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Bivalve Fossil (Mussel or Clam Shell)
Bivalvia
fossil
Moss Agate
Silicon Dioxide with inclusions (SiO2 + impurities)
mineral
Moss Agate
Cryptocrystalline Quartz (SiO2 with Manganese or Iron Oxide inclusions)
mineral
Amber
Succinite (approximate formula C10H16O)
mineraloid
Fossilized Shark Tooth (Partial)
Elasmobranchii (fossil tooth fragment)
sedimentary
Amber
Succinite (C10H16O)
mineral
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (C10H16O)
Organic Gemstone (fossilized resin)
Amber
(C10H16O)n – an amorphous organic substance, primarily composed of polymerized isoprenoids.
Mineral
Fossil Shark Tooth
Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna
fossil
Limestone with Fossil Fragments
Bioclastic Limestone (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Sandstone (Weathered / Crushed)
Quartz Sandstone
sedimentary
Fossilized Coral
Rugose coral / Tabulate coral (Calcium carbonate, CaCO3)
fossil
Polished petrified wood
Silicified wood, primarily microcrystalline quartz (SiO₂) replacing organic tissue
fossil
Anthracite Coal
Anthracite (Metamorphic/High-grade Sedimentary Coal)
sedimentary
Shale with Plant Fossils / Carbonaceous Shale
Laminated Mudrock (Siliciclastic)
sedimentary
Anthracite Coal
Anthracite
metamorphic
Moss Agate
Silicon Dioxide (SiO2) with inclusions
mineral
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Moss Agate
Chalcedony (SiO2) with dendritic inclusions of Manganese or Iron oxide
mineral
Moss Agate
Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)
Mineral
Dendritic Agate (Tree Agate)
Chalcedony (Silicon Dioxide, SiO2) with Manganese or Iron Oxide inclusions
mineral
Septarian Nodule (Septarian Dragon Stone)
Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Clay)
sedimentary
Amber
Succinite (approximate formula C10H16O)
mineral
Seashell Fossil
Invertebrate Bivalve / Gastropod Fossil (Calcium Carbonate, CaCO3)
fossil
Petrified wood
Silicified wood, chiefly microcrystalline quartz (SiO₂)
fossil
Moss Agate
Silicon Dioxide (SiO2) with inclusions of hornblende or chlorite
mineral
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with dendritic inclusions
mineral
Dyed Coral
Calcium carbonate (CaCO3) - Calcite or Aragonite with dye
organic gemstone
Amber
Succinite (C10H16O)
mineral
Amber
Succinite (Fossilized Tree Resin, C10H16O)
mineral
Fossil Brachiopod
Phylum Brachiopoda
fossil