Sedimentary Or Metamorphic (Base Substrate)

Pyrite

Iron Sulfide (FeS2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Pyrite on Quartz matrix

Iron Disulfide (FeS2) on Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal Fragments)

Silicon Dioxide (SiO2)

Calcite

Calcium Carbonate (CaCO3)

Quartz with Iron Stains

Quartz (SiO2) with iron oxide/hydroxide staining

Petrified Wood

Silicified Wood (primarily SiO₂ - Silicon Dioxide)

Red Jasper (Siltstone or Chert-based Jasper)

Silicon dioxide with hematite (SiO2 + Fe2O3)

Vesicular Basalt

Basalt with vesicular texture

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Granite (Weathered)

Granitic intrusive rock

Basalt with vesicles/amygdules

Basalt (containing volcanic glass and plagioclase)

Granite

Granite (compositionally of Quartz, Alkali Feldspar, and Plagioclase)

Petrified Wood

Silicified Wood (SiO2)

Gneiss

Gneiss (quartz-feldspar-biotite gneiss)

Pyrite

Pyrite (Iron sulfide, FeS₂)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Pyrite

Iron Disulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Slag (Industrial)

N/A (Anthropogenic Slag)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

N/A (Non-Geological Object)

Tree Agate

Silica (SiO2) with Chlorite inclusions

Heat-Treated Citrine (Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Silicon Carbide (Carborundum)

Moissanite (SiC), though mostly synthetic

Petrified Wood

Silicified Wood (SiO2)

Granitic Gneiss

Gneiss (high-grade metamorphic rock primarily of quartz, feldspar, and mica)

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.

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite

Quartzite (primarily SiO2)

Magnetite / Iron Ore

Magnetite (Fe3O4)

Gneiss

Gneiss

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Quartz (pebble)

Quartz (SiO₂)

Jade

There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.