Chert Nodule / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Category
Organic (Paper And Cellulose)
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Amber
Succinite (C10H16O)
gemstone
Basaltic Tuff / Volcanic Breccia
Pyroclastic Breccia / Lithic Tuff
igneous
Shale (or Mudstone)
Siltstone/Argillite (composed mainly of clay and silt-sized particles)
sedimentary
Amber
Succinicum (Succinite); C10H16O
Mineraloid (Organic)
Green Moss Agate
Agate (Silicon Dioxide - SiO2) with inclusions of hornblende or chlorite
mineral
Small seashell fossil or shell fragment
Likely calcium-carbonate shell material, chiefly aragonite or calcite; exact species indeterminate
fossil
Fossiliferous Chert (with Fossil Shells)
Silicon Dioxide (SiO2) with biogenic inclusions
sedimentary
Amber
Succinite (C10H16O)
mineraloid
Fossilized tooth, likely a mammalian tooth fragment
Indeterminate fossil tooth; possibly an ungulate or carnivoran tooth
fossil
Quartzite Pebble with Pyrite Coating
SiO2 (Quartz) with FeS2 (Pyrite) inclusions or surface coating
metamorphic
Moss Agate
Silicon Dioxide (SiO2) with Chlorite/Hornblende inclusions
mineral
Dendritic Agate (Tree Agate)
Chalcedony (Silicon Dioxide, SiO2) with Manganese or Iron Oxide inclusions
mineral
Green Moss Agate
Silicon Dioxide with inclusions (SiO2)
sedimentary
Botiroidal Chalcedony or Silicified Fossil Coral
Silicon Dioxide (SiO2) - Chalcedony / Scleractinia (if fossilized)
sedimentary
Ferruginous Sandstone Concretion (Ironstone Phosphorite)
Ferruginous Sandstone (variable Fe-oxide/hydroxide composition)
sedimentary
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
mineral
Amber
Succinite (Fossilized Tree Resin)
fossil
Banded Chert / Flint Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Pearl
Organic gemstone (Calcium carbonate / CaCO3 + Conchiolin)
mineral
Amber
Succinite (Fossilized Tree Resin, C10H16O)
mineral
Chert (and Fossilized Brachiopod shell)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Chalcedony / Agate with Botryoidal Quartz
Silicon Dioxide (SiO2)
sedimentary
Pink Opal
Hydrated Silica (SiO2·nH2O) with Palygorskite/Sepiolite inclusions
gemstone
Ironstone Concretion
Ironstone (Limonite/Goethite Concretion)
sedimentary
Calligraphy Stone
Mariam Jasper (Fossiliferous Limestone with Hematite and Iron)
sedimentary
Amber
Amber (Succinite), fossilized tree resin
Mineraloid
Petrified Wood
Silicified Wood (primarily Quartz/SiO2)
fossil
Banded Agate (Dyed)
SiO2 (Silicon Dioxide / Microcrystalline Quartz)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Amber
Fossilized Tree Resin (C10H16O)
gemstone
Amber
Succinite (Resinite)
mineraloid
Amber
Succinite (Fossilized Resin)
gemstone
Amber
Succinite
Organic Mineraloid
Amber with Organic Inclusions
Succinite (fossilized resin)
mineraloid
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Slate
Metamorphic Mudstone / Shale
metamorphic
Chert (Flint Nodules)
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary
Quartzite river stone
Quartzite (SiO2)
metamorphic
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
mineral
Amber
Succinite (Carbon-based organic compound; approximate formula C10H16O)
Mineraloid