Larvikite
Larvikite (Anorthoclase-rich Monzonite)
igneous
Category
Not A Geological Specimen
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Dalmation Stone (Dalmation Jasper)
Peralkaline Rock with Feldspar and Arfvedsonite
igneous
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Dark-colored Igneous Rock (likely Basalt or Diabase)
Basalt (extrusive igneous) or Diabase (intrusive igneous)
Igneous Rock
Obsidian
Volcanic Glass (SiO2)
igneous
Amber
Succinite
Organic (Mineraloid)
Amber
Fossilized Resin (C10H16O)
mineral
Banded Agate (likely Carnelian Agate or Sardonyx)
Agate is a common name for a microcrystalline variety of Quartz (SiO₂), specifically a form of Chalcedony.
Sedimentary Rock (technically a variety of Chalcedony)
Agate Geode
Cryptocrystalline Quartz (SiO2) with Chalcedony banding
mineral
Bauxite
Bauxite (mixture of hydrous aluminum oxides: Al(OH)3 & AlO(OH))
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Scoria
Scoria (a vesicular basalt or andesite)
igneous
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Script Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Quartz (possibly milky quartz or quartz with inclusions)
SiO2 (Silicon Dioxide)
Mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Amber
Succinates (Fossilized Tree Resin)
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Obsidian
Volcanic glass (primary composition: SiO2)
igneous
Jade
There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.
Mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Smoky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Nephrite Jade
Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2
Mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite (or Fool's Gold)
Pyrite (FeS₂)
Mineral
Quartz Geode (with Calcite influence)
Silicon Dioxide (SiO2) with possible Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore/Bog Iron)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Pink Stained Rock (Likely Quartzite or Sandstone with Iron Oxide Staining)
Quartzite (metamorphic) or Sandstone (sedimentary); coloration likely due to hematite or other iron oxides.
Metamorphic or Sedimentary (with staining)
Limonite (Iron Stone/Goethite)
Limonite (mixture of hydrated iron oxides, primarily Goethite: α-FeO(OH))
mineral
Rutilated Quartz (beads)
SiO2 with TiO2 inclusions (Titanium Dioxide inclusions within Quartz)
Mineral
Amber
Succinite
Organic (Mineraloid)
Limonite (Iron Stone/Gossen)
Limonite (FeO(OH)·nH2O)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Limonite (Iron Ore)
Limonite (unstructured hydrated iron(III) oxide-hydroxides, often FeO(OH)·nH2O)
mineral
Bauxite
Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))
sedimentary
Amber
Amber (C10H16O)
mineral