Hi Kim; You realize that gold plating over sterling, no matter how
heavy will not wear very well at all.
We gold plate all the time, but for costume jewelry mostly because
the base metal is probably brass, and when the gold plating wears you
still see yellow a color.
We will be glad to quote you a price. Send to: Trio Silversmiths 729
Sansom St. Phila. Pa. 19106 Att. Raymond Toll Free 1-800-327-8746