As previosly stated, it is possible to make a Gold/filled pin
into a ring and in many instances I have been asked to put shanks
on old pins. It can be done attractivly and safely. BUT, a
pin is built to be a pin, most pins are not meant to take a lot
of abuse. They are designed to be held loosley on a piece of
cloth. as ring is held tightly on a finger, a ring gets lots of
abuse, a pin can be destroyed in a short period of time when
attached to a finger by a shank.
For me, this is the biggest issue for making an old pin, gold
filled or karat gold into a ring. Look at the piece and
determine if it can take the wear that it will get from a ring.
And then talk to your customer, inform them of the risks and they
can decide if it is what they want to do.
Luck is when opportunity and preperation come together…