Mineralological Specimen

Green Moss Agate

Silicon Dioxide with inclusions (SiO2 + Mn/Fe)

Porphyritic Basalt (likely Chinese Writing Stone)

Porphyritic Basalt / Plagioclase Feldspar in Basal Matrix

Amethyst

Amethyst (Varietal of Quartz), SiO2 with traces of Iron (Fe3+)

Agate Geode with Quartz Druzy

Chalcedony (SiO2) and Quartz (SiO2)

Crazy Lace Agate

Chalcedony (Silicon Dioxide, SiO2)

Prase or Green Quartz

Silicon Dioxide (SiO2 with actinolite or chlorite inclusions)

Amethyst (Quartz)

Silicon Dioxide (SiO2) with iron impurities

Pyrite in Shale

Iron Sulfide (FeS2) in Argillaceous Shale

Chert (Flint)

Chert (SiO2)

Quartz (Druzy)

Silicon Dioxide (SiO2)

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Rose Quartz

Quartz (Silicon Dioxide - SiO2)

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions

Black Opal

Hydrated Silica (SiO2·nH2O)

Smoky Quartz

Smoky Quartz (SiO2)

Fuchsite in Quartz

K(Al,Cr)2(AlSi3O10)(OH)2 (Muscovite with Chromium)

Yellow Jasper

Silicon dioxide (SiO2)

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Moonstone

Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)

Carnelian

Carnelian (Silica, SiO2)

Quartz with Mica inclusions (likely Iron-stained)

Silicon Dioxide (SiO2) with Phyllosilicates

Granitic Pegmatite with Schorl Tourmaline

Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)

Dragon Blood Jasper (Epidote with Piedmontite or Quartz)

Epidote-rich Quartzite / SiO2 with (Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))

Moss Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides

Banded Agate (specifically Carnelian Agate)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Prehnite on Basalt

Prehnite - Ca2Al(AlSi3O10)(OH)2

Labradorite

Labradorite (Ca, Na)(Al, Si)4O8

Garnet Schist

Almandine-Mica Schist

Septarian Nodule (Dragon Stone)

Septarian Nodule (Calcium Carbonate/Aragonite/Calcite Concretion)

Labradorite

Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8

Tiger's Eye

Silicon Dioxide (SiO2) with iron oxide inclusions

Rutilated Quartz

Silicon Dioxide with Titanium Dioxide (SiO2 with TiO2 inclusions)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Green Chalcedony

Silicon Dioxide (SiO2) with trace minerals

Smoky Quartz Geode Cluster

Silicon Dioxide (SiO2)

Labradorite

Labradorite (Ca,Na)(Al,Si)4O8

Libyan Desert Glass

Tektite (high-silica impact glass), SiO2

Granite with Quartz Vein

Phaneritic Felsic Igneous Rock (composed of Quartz [SiO2], Feldspar, and Mica)

Jasper (var. Ocean or Polychrome Jasper)

Silicon Dioxide (SiO2) with iron and mineral inclusions

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Amethyst Quartz (Chevron Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Jasper (Red/Yellow)

Silicon Dioxide (SiO2) with impurities