These cubic zirconia (CZs) are absolutely gorgeous!  They are flawless and on fire!  The
cuts are perfect.  These stones are so much more beautiful in person than in the photograph.
You can safely fire these in the kiln with your PMC.  Just be sure to leave room for
your metal to shrink so it won't crush the stone.  These beauties are just amazing!!!
You will love the results with traditional settings as well.
 
Carat weights approximate since these aren't diamonds.  They are estimated based on a diamond of the same size.