Not A Rock (Animated Character)

Amethyst

Quartz (SiO2) with trace iron impurities

Milk Quartz (or Milky Quartz)

Silicon Dioxide (SiO2)

Shungite

Carbonaceous rock (primarily amorphous carbon)

Yellow Ochre / Limonite

Limonite (FeO(OH)·nH2O)

Banded Calcite (often sold as 'Mexican Onyx' or 'Calcite Onyx')

Calcite (Calcium Carbonate, CaCO3)

Cherry Creek Jasper (also known as Red Creek Jasper or Cherry Creek Agate)

Jasper, microcrystalline quartz (SiO₂)

Amber

Succinite (specifically for Baltic amber); Fossilized Tree Resin (C10H16O)

Iron Meteorite

Iron-nickel alloy (primarily kamacite and taenite)

Amethyst

SiO2 (Silicon Dioxide)

Quartz (beads)

SiO2 (Silicon Dioxide)

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Mica (Muscovite)

Muscovite, KAl2(AlSi3O10)(OH)2

Calcite

Calcite (CaCO₃, Calcium Carbonate)

Emerald

Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.

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.

Tektite (likely Australite)

Tektite (no specific chemical formula as it's a natural glass of variable composition, mostly SiO2, Al2O3, FeO, MgO, CaO, K2O, Na2O, TiO2)

Limonite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

Rose Quartz

Rose Quartz (SiO₂)

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Blue Lace Agate

Chalcedony (a form of Quartz) - SiO2

Amethyst

Amethyst (variety of Quartz, SiO2)

Amethyst (variety of Quartz)

SiO2 (Silicon Dioxide)

Moonstone

Adularia (orthoclase) or Albite (plagioclase), a feldspar mineral (KAlSi3O8 or NaAlSi3O8 respectively, often a mixture)

River/Stream Pebble

Clast / Detrital Grain / Rounded Sedimentary Particle (Compositionally variable, commonly Quartz, Feldspar, Chert, or other resistant rock fragments)

Quartz (in matrix)

Quartz (SiO₂)

Galena

Lead(II) Sulfide (PbS)

Quartz (in a rock matrix)

Quartz (SiO2)

White Jade (Nephrite)

Nephrite, Ca2(Mg,Fe)5Si8O22(OH)2

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Pyrite

Pyrite (FeS2)

Rhodonite

Rhodonite (MnSiO3)

Snowflake Obsidian

Volcanic glass with Cristobalite inclusions (mostly SiO2)

Jasper (var. Ocean or Polychrome Jasper)

Silicon Dioxide (SiO2) with iron and mineral inclusions

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Tumbled)

Quartz (Silicon Dioxide, SiO2)

Obsidian

Volcanic Glass (SiO2, usually >70% silica content)

Red Shale

Lutite (primarily composed of clay minerals and iron oxides like hematite, Fe2O3)

Green Aventurine

Aventurine (a variety of Quartz, SiO2)

Diopside (likely Chromian Diopside)

Diopside, part of Clinopyroxene family of inosilicates. Chemical formula: CaMgSi2O6. The green variety is often Chromian Diopside due to chromium impurities.

Granite

Granite (a plutonic igneous rock)

Sandstone with trace fossil

Sandstone, possibly with Skolithos or similar trace fossil