A 14k white gold pendant with rubies and an australian opal doublet, that I had made a few years ago. My customer brought it in for a thorough cleaning and for a check-up on its stones, setting and chain. She told me she had worn it almost daily for about three years now. As it turned out, the pendant did not show any signs of heavy usage, just a few tiny marks, nothing out of the ordinary. All stones were still in very good shape. After the check-up, I gave the white gold a new machine polish so the pendant looks just like new again!