Will 18kt gold over sterling silver change colors?

If you are talking about oxidation (oxygens tarnishing of metal) then no more so than 18ct gold as effectively the gold wraps over the silver. The gold could wear away after wear though or could be scratched through the gold plating thus exposing the silver underneath. read more

The gold could wear away after wear though or could be scratched through the gold plating thus exposing the silver underneath. You would see the difference visibly if it was a big scratch and the silver would be prone to oxidation and colour change. read more

Some antique gold-plated silver pieces will have most of the gold-plate worn off. This has a rather nice look, a pale yellow cast still bonded to the silver, a color somewhat like the moon at times. The gold, although it is at an extreme high right now, should be a minimum part of the pricing. read more