This is a fine, very femine piece.  Just enough to make a small statement and it shines so beautifully in the light.  I wish I was a little more clever on the camera to demonstrate.
 
38cm Chain with a 5cm extender chain
Pendant is 1.2cm is diameter
Stamped 925
Centre Rainbow coloured stone is 0.5cm diameter and surrounded with 12 Marquise Cut Diamonté stones.