I met a gentleman with a variation of this particular proclivity. He told me a buddy of his had gotten the full circle for the pleasure of his girlfriend and she loved it! So, instead of a "necklace" of pearls, he had a single diamond shaped implant under his skin on the top side. It was very interesting to say the least!
Have any gents here in the realm done this? Ladies, have you encountered a gentleman with this bonus feature?