Labradorite
Plagioclase Feldspar ((Ca, Na)(Al, Si)4O8)
mineral
Category
Not A Geological Specimen
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Amber
Succinite (specifically for Baltic amber); approximate formula C10H16O
organic mineraloid
Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
igneous
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Limonite
Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)
mineral
Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
igneous
Lapis Lazuli
Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
metamorphic
Chert
Chert (microcrystalline quartz, SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Prasiolite and Quartz Crystal Cluster
Quartz (SiO2); Prasiolite is a variety of Quartz
mineral
Amber
Succinite (fossilized tree resin)
Organic Mineraloid
Limonite (Iron-rich Gossan/Laterite)
FeO(OH)·nH2O (Hydrated Iron Oxide)
mineral
Limonite Concretion
Limonite (Hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)
sedimentary
Obsidian
Obsidian (Volcanic Glass) SiO2 (70% or more)
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Amber
Succinite (organic hydrocarbon)
mineraloid
Limonite/Ironstone
Limonite (FeO(OH)·nH2O)
mineral
Geodal Limestone / Calcite Druze
Calcium Carbonate (CaCO3)
sedimentary
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Amber
Succinite (fossilized tree resin)
mineral
Limonite (Ironstone)
FeO(OH)·nH2O (Hydrous ferric oxides)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
mineral
Amber
Succinite (Fossilized Tree Resin)
mineraloid
Granite
Granite (a felsic intrusive igneous rock)
Igneous
Amber
Succinite (Fossilized Tree Resin, C10H16O)
mineral
Amber
Succinite (Resin C10H16O)
mineral
Amber
Succinite
Mineraloid
Red Sandstone (Old Red Sandstone Pebble)
Arenite with iron oxide (Fe2O3) cement
sedimentary
Limonite (Iron Stone/Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Limonite (Ironstone)
Limonite (FeO(OH)·nH2O)
mineral
Amber
Amber (Succinite), fossilized tree resin
Mineraloid
Chert (varietal known as Jasper or Flint)
Silicon Dioxide (SiO2)
Sedimentary Rock
Cobaltoan Calcite / Pink Dolomite (Possible)
Cobaltoan Calcite: (Ca,Co)CO3; Pink Dolomite (or Thulite): CaMg(CO3)2 or Mn-Dolomite / (Thulite: Mn2+3Al2(Si2O7)(SiO4)O(OH))
Mineral / Rock (depending on purity)
K2 Jasper (K2 Granite)
Azurite-in-Granite
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Limonite (Iron Ore)
Limonite (mixed iron hydroxides, primarily FeO(OH)·nH2O)
mineral
Banded Gneiss (River Cobble)
Gneiss (a high-grade metamorphic rock)
metamorphic
Bauxite
Bauxite (Mixture of Hydrous Aluminum Oxides)
sedimentary
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Sedimentary Rock