Dyed Pink Quartzite (Jadeite Simulant)
Silicon Dioxide (SiO2) with organic dye
metamorphic
Category
Organic (Paper And Cellulose)
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Gastropod Steinkern (Fossil Snail Internal Mold)
Class Gastropoda (Internal Mold)
sedimentary
Amber
Succinite (Fossilized Resin)
gemstone
Sandstone with Iron Oxide Concretion
Arenite with Hematite/Goethite Concretion
sedimentary
Amber
Succinite
Mineraloid
Amber
Succinited (fossilized tree resin)
fossil
Amber and Tumbled Stones
Fossilized Tree Resin (Succinite)
fossil
Petrified Wood
Silicified Wood (SiO2 as Quartz/Chert/Chalcedony)
sedimentary
Moss-covered Rock Fragment
Weathered Rock Fragment with Epilithic Growth
sedimentary
Amber (Raw Copal)
Fossilized Plant Resin (Gummite/Succinite)
mineral
Amber (Rough)
Succinite (Resinite)
gemstone
Amber (Copal)
Succinate (Fossilized Resin)
mineraloid
Chert (Iron-rich or Slate-like variant)
Silicon Dioxide (SiO2)
sedimentary
Tufa (Calcareous Tufa)
Calcareous Tufa (Precipitated CaCO3)
sedimentary
Pyrite in Shale
Iron Sulfide (FeS2) in Argillaceous Shale
sedimentary
River Cobble (Sandstone)
Arenite (primarily SiO2)
sedimentary
Amber
Succinite (fossilized resin)
mineral
Moss Agate
Silicon Dioxide (Chalcedony with green mineral inclusions), SiO2
gemstone
Moss Agate
Silicon Dioxide (SiO2) with inclusions
mineral
Black Flint
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Green Moss Agate
Agate (Silicon Dioxide - SiO2 with inclusions of Manganese/Iron oxides)
mineral
Amber
Succinite (Fossilized Tree Resin)
Organic Mineraloid
Amber
Succinite (approximate formula C10H16O)
mineral
Travertine
Tufa limestone (CaCO3)
sedimentary
Iron Ore / Hematite / Ironstone Nodule
Hematite / Goethite (Fe2O3 / FeO(OH))
sedimentary
Amber
Fossilized Resin (C10H16O)
mineral
Gastropod Fossil (Snail Steinkern)
Class Gastropoda (internal mold)
sedimentary
Coquina / Limonite-stained Limestone
Sedimentary Limestone with Iron Oxyhydroxide (FeO(OH)·nH2O)
sedimentary
Coquina (Fossiliferous Limestone)
Coquina (Organic Clastic Limestone)
sedimentary
Aragonite (Star Cluster or Twinned variety)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Sandstone Concretion
Arenaceous concretion (primarily SiO2 with Fe2O3 staining)
sedimentary
Amber
Succinicum (C10H16O)
mineral
Fossiliferous Limestone
Calcium Carbonate (CaCO3)
sedimentary
Amber
Fossilized Tree Resin
gemstone
Amber
Succinite (specifically for Baltic amber); Complex mixture of organic compounds (C10H16O)
Organic Mineraloid
Moss Agate
Chalcedony (Silicon Dioxide / SiO2)
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide
mineral
Mookaite Jasper
Silicified Radiolarite (SiO2 with iron impurities)
sedimentary
Pearl
Aragonite (CaCO3 with conchiolin)
mineral
Precious Coral
Corallium rubrum (Calcium carbonate with trace carotene)
Organic gemstone / Sedimentary mineraloid
Glauconite (Green Sandstone)
Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2
sedimentary
Fossil-bearing Sedimentary Rock
Sedimentum cum fossili
fossil