7.37ct Amber, Faceted Octagonal Cut Lab Created While agate and jasper are

While agate and jasper are both atomically the same stone

The term "Cantera opal" refers to fire opal from Mexico that has been cut to contain pieces of the natural host rock the opal was originally formed in

one round cut

12mm Origin Quilpie Mining District

The Setting: Vintage Style Filigree Ring

7.37ct Amber, Faceted Octagonal Cut Lab Created While agate and jasper areLoose Faceted Amber A challenge to both find and produce, faceted amber is difficult for cutters to work with due to amber's softness and consistency. As material heats from friction through the cutting process, it becomes gummy, making stones with a good polish rare. More Information The Weight: 7. 37cts The Origin: Mexico The Measurements: 17. 33mm x 17. 27mm x 12. 29mm Additional Notes: No bug inclusions. Hairlike fissures are seen due to crazing