Anthropogenic (Man Made Material)

Wood Beads (Palmwood/Ebony)

Various species for wood, but often refers to woods like Palmwood (e.g., Borassus flabellifer) or Ebony (Diospyros spp.) for their distinctive grain and hardness.

Aragonite Star Cluster (or Aragonite Sputnik)

Aragonite (Orthorhombic Calcium Carbonate, CaCO3)

Chrysocolla

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

Chert (variant Flint/Novaculite)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chalcedony (specifically Agate or Flint)

Silicon Dioxide (SiO₂)

Dinosaur Bone (Gembone)

Petrified Dinosaur Bone (Apatite/Silica replacement)

Chert (specifically Flint or Dark Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2)

Chert (Jasper and Chalcedony)

Silicon Dioxide (SiO2)

Chert (Field Stone)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (variously identified as Flint)

Microcrystalline Quartz (SiO2)

Chert (variations include Flint or Jasper)

Cryptocrystalline Quartz (SiO2)

Chert / Jasper and River Stones

Microcrystalline Quartz (SiO2)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (Jasper variety)

Chert (SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2)

Red Jasper

Jasper (SiO2) with Hematite (Fe2O3) inclusions

Yellow Jasper

Silicon Dioxide (SiO2) with iron impurities

Jasper or Agate-bearing Chert

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (Flint nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Meteorite (Chondrite)

Stony Meteorite (Ordinary Chondrite)

Petrified Wood

Silicified Wood (SiO2 permineralization)

Jasper

Silicon Dioxide (SiO2) - Impure Variety of Chert

Ferruginous Sandstone

Sandstone, Iron-rich

Chert (variant Flint/Jasper)

Microcrystalline Opaline Silica (SiO2)

Quartz (Water-worn pebble)

Silicon Dioxide (SiO2)

Mica Schist

Mica Schist (primarily Muscovite and/or Biotite composition)

Serpentinite (often containing Jadeite/Nephrite)

Antigorite-rich Serpentine Rock, (Mg, Fe)3Si2O5(OH)4

Chiastolite (Andalusite)

Al2SiO5

Blue Kyanite

Kyanite (Al2SiO5)

Green Kyanite

Kyanite (Al2SiO5)

Corundum

Corundum (Aluminium oxide, Al2O3)

Brachiopod Fossil in Shale

Phylum Brachiopoda (often species of Order Spiriferida or Rhynchonellida)

Milky Quartz

Silicon Dioxide (SiO2)

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Staurolite (Fairy Stone)

Staurolite (Fe2+2Al9Si4O23(OH))

Jasper

Jasper (Silicon Dioxide, SiO2)

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(F,OH)2

Basalt

Basalt (principally Plagioclase and Pyroxene)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Muscovite Schist

Mica Schist (KAl2(AlSi3O10)(OH)2)

Quartzite

Quartzite (SiO2)