Burmese jadeite "Bi", treasured in China because it is the "symbol of Heaven".  This Bi pendant is approximately 28mm across, 5.5mm thick. You can keep it on the key chain / ring with the 8mm bead, or remove it and wear it with a "Dragon Whiskers" adjustable silk cord. (View here)    Both sides are very high polished, excellent quality.  Jadeite Bi pendants price usually is $88.

Each is slightly different  

Tested by gemology refraction, genuine and natural Burmese jadeite.