9" Knife With Fossil Dinosaur Bone (Gembone) Inlays

 
 
 
 
 
 
 
This is a 9" long, steel knife with a handle made out of polished, purple, agatized dinosaur bone (Gembone). The bone is from the Morrison Formation in Utah and is approximately 150 million years old. The knife comes with a leather case and protective pouch.

The bone would have likely been from one of the large Sauropod dinosaurs in the Morrison Formation such as Diplodocus or Camarasaurus, as theropod bones such as Allosaurus are hollow and typically not solid enough to polish or carve.

Agatized dinosaur bone is a rare form of fossilized dinosaur bone where the original fossilized bone (typically permineralized with calcite) has been re-mineralized (replaced/substituted) with silica-type compounds (agate, jasper, chalcedony, or opal). In a unique and isolated circumstance, the strata on the Colorado Plateau were uplifted during the tertiary intrusions, about 35,000,000 years ago, when the San Rafael Swell and the La Sals, Henry, and Abajo Mountains were formed. As these ranges were forming, local strata layers were flooded with silica-rich, superheated groundwater. This provided the appropriate environment to begin the replacement of the calcite in the original fossils with silicates. The most prolific layers of gem bone come from the Morrison Formation which is late Jurassic in age.
DETAILS
SPECIES
Unidentified
LOCATION
Utah
FORMATION
Morrison Formation
SIZE
Gembone inlay 4.3" long, knife 9" long, 4.1" blade
ITEM
#101813
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