This is what I founf. Hope it helps http://wiki.answers.com/Q/What_does_14K_GS_mean ~ No - it does not mean gold over silver at all. It means "gold-shelled" which is another way of indicating that it merely gold plated. The base metal is rarely silver (or the plating would probably be called vermeil and not be hallmarked GS) and is probably just inexpensive base metal(s).