Pietersite Free Form Cabochon Amber Xiphactinus audax

Xiphactinus audax

and even frozen carcasses found in Siberian permafrost

Upper Lias (180 MYO)

The design patterns are natural

Pietersite started as the mineral crocidolite--one of several minerals such as tigereye--which belong to the riebeckite family of amphibole silicates

Pietersite Free Form Cabochon Amber Xiphactinus audaxWeight: 3. 3g (16. 5ct) Approx. dimensions: 28mm 19mm Pietersite, also called "eagle's eye," was named in honor of Sid Pieters who discovered it in 1962 in Namibia, Africa. Pietersite is a trade name for a dark blue grey breccia aggregate made up mainly of hawk's eye and tigereye. It is a variety of chalcedony (itself a variety of quartz) with embedded fibers of amphibole minerals in varying degrees of alteration. The fibers cause a blue chatoyancy