Anthropogenic Material (Man Made Sedimentary Mimic)

Tiffany Stone

Bertrandite Fluorite (CaF2 + Be4Si2O7(OH)2)

Moss Agate

Chalcedony (SiO2) with inclusions of manganese or iron oxides

Diamond

Diamond (C)

Stromatolite

Biogenic Sedimentary Rock (composed predominantly of CaCO3)

Obsidian

Volcanic Glass (predominantly SiO2, approximately 70% or more)

Banded Iron Formation

Banded Iron Formation (BIF)

Chert (Jasper variation)

Silicon Dioxide (SiO2)

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Serpentinite

Serpentinite (composed primarily of minerals in the Serpentine group)

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Quartz

Quartz (Silicon Dioxide, SiO2)

Granitoid (Granitic Rock)

Granitoid (Quartzo-feldspathic plutonic rock)

Blue Quartzite (Aventurine variety)

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

Rose Quartz

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions (SiO2 + Fe2O3)

Granite

Plutonic felsic igneous rock

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

Quartzite Pebbles

Quartzite (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Yellow Quartzite

Quartzite (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Quartzite (River Cobble)

Quartzite (SiO2)

Moss Agate / Carnelian Agate

Silicon Dioxide (SiO2) with iron and manganese inclusions

Rose Quartz

Silicon Dioxide with trace elements (SiO2 + Ti, Fe, or Mn)

Limestone

Calcium Carbonate (CaCO3)

Serpentinite

Serpentinite (composed mainly of Group: Serpentine; (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Milky Quartz

Silicon Dioxide (SiO2)

Schist

Mica Schist (Medium-grade metamorphic rock)

Plagioclase Feldspar

NaAlSi3O8 – CaAlSi2O8 (Sodium-Calcium Aluminum Silicates)

Quartzite

Quartzite (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Milky Quartz (Water-worn pebble)

Quartz (Silicon Dioxide, SiO2)

Quartz (specifically Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)