This is basically
a computer generated image using images of the actual stones,
so I wasn't able to include a dime or some other standard as a
refenence for overall size, but the amethyst is 5mm dia. The overall
length is just under 1 3/4" and the widest part of the white drusy
is 3/4".
There would be a fine silver bezel around both stones and would
look similar to the stones in this
image.