Mineral Like (Anthropogenic)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Banded Agate (specifically Chalcedony nodule)

Agate (Silicon Dioxide, SiO2)

Chrysoprase

Silicon dioxide with nickel impurities (SiO2 + Ni)

Banded Agate (Carnelian type)

Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Chrysocolla in Jasper (Chryso-Jasper)

Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)

Peacock Ore

Bornite (Cu5FeS4)

Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)

Mixed Silicates and Oxides (predominantly SiO2 group minerals)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Pyritic Quartzite

Metequartzite with FeS2 (Pyrite) inclusions

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Pegmatite with Smoky Quartz and Feldspar

Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8)

Amethyst and Peridot

Amethyst (SiO2 with iron impurities) and Peridot ((Mg, Fe)2SiO4)

Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating

Basalt with Amygdaloidal Infilling

Porphyritic or Amygdaloidal Basalt

Milky Quartz

Silicon Dioxide (SiO2)

Amethyst

Amethyst (Silicon Dioxide - SiO2 with impurities of iron)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Jasper with Agate Inclusions

Silicon Dioxide (SiO2) - variety of Quartz/Chert

Chrysocolla on Matrix

Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O

Pink Granite

Phaneritic intrusive igneous rock (K-feldspar rich)

Dioptase

Dioptase (CuSiO3 · H2O)

Blue Crackle Quartz (Dyed Fire Agate/Quartz)

Silicon Dioxide (SiO2) with artificial dye treatment

Granite

Course-grained intrusive igneous rock

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron inclusions

Fossil Shark Tooth

Selachimorpha (Chondrichthyes dental fossil)

Glauconite (Green Sandstone)

Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Citrine

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix

Moss Agate

Agate (Silicon Dioxide, SiO2) with dendritic inclusions

White Marble

Recrystallized Calcite (CaCO3)

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Red Sandstone

Arenite (primarily SiO2 with hematite/iron oxide coating)

Epidosite (Epidote-rich rock)

Epidosite (consisting primarily of Epidote: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)

Petrified Wood

Silicified Wood (primarily SiO2)

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2

Gneiss (Metamorphic Rock)

Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)

Chert Nodule (Fossiliferous Chert)

Microcrystalline Quartz (SiO2)