Mineral (Specifically, A Variety Of The Mineral Species Pyrope Almandine Garnet)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Jasper (specifically Brecciated or Agated Jasper)

Silicon Dioxide (SiO2) - Chalcedony with impurities

Obsidian

Volcanic Glass (SiO2 + minor impurities)

Schist

Mica Schist

Jasper (specifically Fancy or Polychrome Jasper)

Silicon Dioxide (SiO2) - Chalcedony

Fossil Shark Tooth

Carcharodon or Carcharias fossil (Vertebrate Fossil)

Fossilized Shark Tooth in Matrix

Otodus sp. (likely Otodus obliquus)

Feldspar (specifically Orthoclase)

Potassium Aluminum Silicate (KAlSi3O8)

Biotite Schist

Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Amethyst (specifically Chevron Amethyst or Dream Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Schist with Garnet inclusions

Garnet-mica-schist

Agate (specifically Carnelian Agate or Lake Superior style Agate)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Green Calcite

Calcium Carbonate (CaCO3)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Granite

Granite (a common rock type, not a single mineral species)

Picture Jasper (specifically Biggs or Deschutes variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (White-Tan variety)

Silicon dioxide (SiO2) / Microcrystalline Quartz

Red Cubic Zirconia (Simulated Garnet)

Zirconium Dioxide (ZrO2)

Banded Agate (specifically Sardonyx)

Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz

Moonstone

Adularia (orthoclase) or Albite (plagioclase), a potassium aluminum silicate of the feldspar group

Quartz (specifically Milky/White Quartz)

Silicon Dioxide (SiO2)

Banded Agate (specifically Sardonyx or Black Agate variety)

Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz

Feldspar (specifically Orthoclase)

Potassium Aluminum Silicate (KAlSi3O8)

Smoky Quartz

Silicon Dioxide (SiO2)

Jasper Agate (specifically Brecciated Jasper with Agate inclusions)

Silicon Dioxide (SiO2)

Gneiss (specifically a Granitic Gneiss)

Gneiss (Composition: Quartz, Feldspar, Mica)

Tanzanite (Blue Zoisite)

Ca2Al3(SiO4)(Si2O7)O(OH) + (V) - Vanadium-bearing Zoisite

Tanzanite

Blue Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))

Rough Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Pegmatite (likely Granitic Pegmatite)

Pegmatite (a coarse-grained igneous rock, often with granitic composition)

Citrine Quartz

Silicon Dioxide (SiO2) - Ferric Iron impurities

Schist with Quartz/Mica

Mica Schist (primarily Muscovite and Quartz)

Schist

Mica Schist

Moonstone (Feldspar)

Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Fossilized Crinoid Stem

Class Crinoidea (Echinodermata)

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Agate (specifically, likely a geode slice or nodule)

Agate (a variety of Chalcedony, with chemical formula SiO2)

Gneiss (High-Grade Metamorphic Rock)

Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)

Banded Agate (Onyx type)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Tourmalinated Quartz

Silicon Dioxide (SiO2) with Schorl inclusions (NaFe2+3Al6(BO3)3Si6O18(OH)4)