Craft Edge

Go to object then select break apart
next look in your layers and there will be the rhinestone circles
after that you will see a number in ( ) that will count from 1 & up that will be your stone count.
after that make sure you group them back.

I know this is a 2yr old post but hope this helps.

I know this is a older post but just select all the stones by color and then I go to break apart. now in layers you should see the circles with (1) (2) etc in the panel. that will then show you the total rhinestone count. make sure you group them all together again.