Hello lovely people,
I am a new member here and need some advice:
Our gold smith dips diamond studded rings into some boric acid solution before resizing them into a bigger or smaller size. As soon he heat solders the piece the boric sticks on the diamonds and does not come off despite exposing the ring to ultrasonic and steam cleaning. Even dipping the piece in ISO propyl alcohol does not clean the diamonds. As a result even white diamonds start looking gray and the lustre is reduced. Can you please help with a solution to this problem?