I was holding down an A4 sheet on the scanner today,
my shirt button has an O and an X, excellent . . .
We have sourced and had cut this Table Cut gem Cubic Zirconia in the same way as a 17th Century diamond cutter would have done it, leaving the round edges unpolished. Cleaving a macle to allow a view into the gem, then simply polishing the existing sides of an octagonal crystal.