ALL THE COLOURS OF THE RAINBOW...

 But which colour to choose?

 

I am in the middle of a commission to "re-purpose" an old gold ring.

I have created a hammered effect over the whole ring and then I have been asked to add a stone setting.  I have never set a stone this particular size before but in the variety of semi-precious cabochon stones that I have, sadly I have not got all the colours of the rainbow, but it turns out I have already got 7 different possible stones that would fit!  

But which colour to choose?   

What do you think?