Mineralological Specimen

Vuggy Quartz on Matrix

Silicon Dioxide (SiO2)

Geode with Quartz and Chalcedony

Silicon Dioxide (SiO2)

Obsidian with Spherulitic Devitrification (Snowflake Obsidian/Mahogany related)

Volcanic Glass (70% or more SiO2)

Carnelian Agate

Silicon Dioxide (SiO2) with Iron Impurities

Schist

Mica Schist

Chert (specifically Flint or Novaculite variant)

Chert (Microcrystalline Quartz, SiO2)

Jasper with Quartz Veining

Silicon Dioxide (SiO2) with impurities

Garnet Schist

Almandine Garnet Schist

Fancy Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Chert (with Iron Staining)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide (Fe2O3) cement

Amber Flint (Chert)

Cryptocrystalline Quartz (Silicon Dioxide, SiO2)

Granite (with Almandine Garnet inclusions)

Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)

Orange Quartzite / Quartz River Siltstone

Quartzite (SiO2)

Fancy Jasper (Mookaite style)

Silicon Dioxide (SiO2) with iron oxide impurities

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Agate (Water-Worn Pebble)

Silicon Dioxide (SiO2) - Chalcedony

Quartz

Silicon Dioxide (SiO2)

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Chert (Brecciated Chert)

Silicon Dioxide (SiO2)

Fossiliferous Chert (with Brachiopod or Mollusk fragments)

Silicon dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Amethyst (Druze)

Silicon Dioxide (SiO2) with iron impurities

Amazonite

Potassium Feldspar (Microcline) - K(AlSi3O8)

River Quartzite (River Rock)

Quartzite (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Yellow Quartz (Citrine or Quartzite Pebble)

Silicon Dioxide (SiO2)

Fuchsite

K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)

Flowerstone

Porphyritic Basalt or Porphyritic Andesite

Fluorite-Gedrite in Quartz (Schist)

Fluorite (CaF2) with Gedrite in Quartz/Feldspar Matrix

Chert Pebble (Jasper variant)

Microcrystalline Quartz (SiO2)

Nuummite

Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Beryl (Emerald Variety)

Beryllium Aluminum Silicate (Be3Al2(SiO3)6)

Milky Quartz

Silicon Dioxide (SiO2)

Marble

Recrystallized Calcite Rock (CaCO3)

Sandstone

Arenite (primarily SiO2)

Yooperlite (Sodalite-bearing Syenite)

Sodalite-rich Syenite (Na8(Al6Si6O24)Cl2)

Chert (and Jasper blend)

Chert (Microcrystalline Quartz, SiO2)

Amethyst

Amethyst (Silicon Dioxide, SiO2 with Iron impurities)

Labradorite

Feldspar (variety of Anorthite), (Ca,Na)(Al,Si)4O8

Megalodon Shark Tooth (Partial Fossil)

Otodus megalodon (fossilized in Calcium Phosphate/Apatite)