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Amethyst Quartz Druse

Silicon Dioxide (SiO2) with iron impurities

Basalt with Garnet inclusions

Basalt containing Nesosilicate (Garnet Group, likely Almandine Fe3Al2Si3O12)

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese or Iron Oxide inclusions

White Moonstone (Scolicite or White Feldspar var. )

Lattice-structure Silicate (KAlSi3O8)

Chert (Quartz)

Microcrystalline Silica (SiO2)

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Dalmatian Stone (commonly Dyed)

Dalmatian Jasper (Peralkaline igneous rock)

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

Quartz (Milky/Smoky variety on matrix)

Silicon Dioxide (SiO2)

Sandstone

Sandstone (clastic sedimentary rock)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Unakite / Epidosite

Epidote with Orthoclase and Quartz; (Ca2(Al2,Fe)(SiO4)3(OH)) / (KAlSi3O8) / (SiO2)

Sandstone with Algae Growth

Arenite with Chlorophyta/Lichen

Pyrite

Iron Sulfide (FeS2)

Red Jasper

Chalcedony (SiO2 with iron oxide impurities)

Lapis Lazuli (Raw)

Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S

Massive Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Larvikite

Monzonite (intermediate intrusive igneous rock containing plagioclase, alkali feldspar, and minor dark minerals)

Basalt

Mafic Volcanic Basalt (Major minerals: Plagioclase feldspar, Pyroxene; Minor: Olivine, Magnetite)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Jasper with Agate Inclusions

Silicon Dioxide (SiO2) - variety of Quartz/Chert

Quartzite

Quartzite (SiO2)

Amethyst

Quartz (Silicon Dioxide with Iron impurities), SiO2

Pink Granite

Phaneritic Plutonic Felsic Rock (Granite)

Fluorite

Fluorite (Calcium Fluoride - CaF2)

Sandstone

Arenite (primarily SiO2)

Native Gold Nugget

Native Gold (Au)

Baltic Amber

Succinite (Polmerized conifer resin)

Lapis Lazuli (Tumbled Specimen)

Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Botryoidal Chalcedony (likely Desert Rose/Agatized Geode Crust)

Silicon Dioxide (SiO2)

Amazonite

Triklinic Potassium Feldspar (KAlSi3O8)

Granite Cobble (River Stone)

Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)

Diorite

Diorite

Sunstone and Green Aventurine

Sunstone: (Ca,Na)[(Al,Si)2Si2O8] (Plagioclase Feldspar Group); Green Aventurine: SiO2 (Quartz)

Bauxite

Bauxite (Principal ore of aluminum; mixture of minerals including Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))

Chert (Field Stone)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Yellow Chalcedony (Agate)

Silicon Dioxide (SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (High Silica / Iron Oxide)

Sodalite Syenite

Sodalite-bearing Syenite (Na8(Al6Si6O24)Cl2)

Limonite (Ironstone)

Limonite (FeO(OH)·nH2O)

Labradorite

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