Amber
Succinate (Succinite for Baltic varieties)
Organic Mineraloid
Category
Not A Geological Specimen
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Limonite (Ironstone)
Limonite (mixture of hydrated iron(III) oxide-hydroxides)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Amygdaloidal Basalt with Secondary Minerals
Basalt containing secondary mineralization (likely Chlorite, Celadonite, or Zeolites)
igneous
Quartz
Quartz (SiO₂)
Mineral
Banded Chert or Chert with Quartz Veins
Chert (SiO2)
Sedimentary
Obsidian
Obsidian (Volcanic glass, primarily SiO2)
igneous
Limonite (Ironstone Concretion)
Limonite (Hydrous ferric oxide mixture, FeO(OH)·nH2O)
sedimentary
Dyed Dalmatian Stone
Aplite (Alkali-feldspar granite) with Arfvedsonite
igneous
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Dalmatian Stone
Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)
igneous
Amber
Succinite (C10H16O)
mineral
Amber
Succinates
mineraloid
Obsidian
Volcanic Glass (SiO2 rich)
igneous
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Black Obsidian
Volcanic Glass (SiO2)
igneous
Amber
Succinite (specifically for Baltic amber); Fossilized Tree Resin (C10H16O)
Organic Mineraloid
Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Corundum
Corundum (Al2O3)
Mineral
Limonite with Quartz
FeO(OH)·nH2O (Limonite) with SiO2 (Quartz)
mineral
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
mineral
Chert / Flint (a variety of Chert)
Chert (SiO2)
Sedimentary Rock (technically a microcrystalline quartz mineral aggregate)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Black Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Quartz
Quartz (SiO₂ - Silicon Dioxide)
mineral
Limonite/Goethite nodule
Goethite (FeO(OH)) with Hydrated Iron Oxides
mineral
Pink Anthracite Coal (dyed)
Anthracite Coal (Artificially Colored)
Sedimentary Rock (Altered)
Amber
Succinate (Fossilized Tree Resin)
fossil
Obsidian
Obsidian (Volcanic Glass)
igneous
Limonite with Goethite
Iron Hydroxide Mixture (FeO(OH)·nH2O)
mineral
Lapis Lazuli
Lazurite-dominant Metamorphic Rock (complex aluminosilicate)
metamorphic
Fluorite (Green)
Calcium Fluoride (CaF2)
mineral
Banded Slag Glass (Leland Blue/Frankfort Green style)
Anthropogenic Glass Specimen (Amorphous Silicon Dioxide with impurities)
mineral
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Mineral
Obsidian
Volcanic glass (SiO2 + impurities)
igneous
Dalmatian Jasper
Peralkaline rhyolite with arfvedsonite inclusions
igneous
Snowflake Obsidian
Vitreous volcanic rock with Cristobalite inclusions (mostly SiO2)
igneous
Fluorite
Calcium fluoride (CaF2)
mineral
Quartz (Crystal/Druzy Quartz)
Quartz (SiO₂)
Mineral
Obsidian
Volcanic Glass (SiO2)
igneous
Fragmented Sedimentary Pebble
Clastic Sedimentary Specimen
sedimentary