white gold vintage wedding bands

Old Vintage / Antique ring question? (Especially on the metal used in it)?
While cleaning my apartment grams found a ring which was hidden in a paper jewelry box. (She was placed in a nursing home, and I have to get all her jewelry old) gave me the picture of not knowing what it contained. It looks like this: http://www.jewelryexpert.com/catalog/graphics/Antique-Diamond-Ring-5.gif The metal has been damaged so severely. The image is almost a coincidence accurate. The only thing is that the group was almost black in color and brightness. White gold can tarnish this evil, if left unattended for years? (All of their gold rings wedding, while others are white, except … that the golden yellow). The real band was in excellent shape, only it was black … Has anyone seen a ring reducing tarnish probalby bought in the 30s and never really supported? (No one knows exactly how long he was in the jewelry box to start).
I'm no expert, but have been through this same exercise with my grandmother's jewelry and my mom. My conclusion on the very black metal stained [jewelry and table] is that the black "tarnished" the material was made of silver or plate. The money is exposed to air for long periods tends to build a thick layer of oxidation [tarnish, oxidation of iron, so]. Do not remove this layer of oxide of silver, enamels or abrasive cleaners like Brasso. What are tarnishing contains money and you do not want to delete. Instead use a product that removes chemical contaminants that mix with the surface of the silver and the cause of black layer. I product called Tarn-X Tarnish Remover that "converts" again without removing silver tarnish silver. This will leave the money, but not leaving a polished finish. To restore the shine, polished finish, have a new product called Tarn-X silver polish should be used after taking his Tarnish Remover. Back in the "old days" years ago, the only place to get Tarn-X was through television infomercials. But today is available in the supply of most hardware and sometimes to out home improvements, such as Lowe's and Home Depot, and probably at Wal-Mart and K-Mart. The following information contact the manufacturer of the Tarn-X. Jelmar, 5550 W. Touhy Avenue, Skokie, IL, USA, 60,077. To avoid damaging the finish of these items in cash, not immerse in tarnish Remover. FOLLOW THE INSTRUCTIONS ON THE LABEL LETTER !!!!! Moreover, items with irregular surfaces not try to remove all tarnish inside cracks and crevices, because that's what gives them their character models. To do this, instructions are to use a clean damp cloth or sponge and a small work area at once. With the elements that are tarnished so bad that they are black, IT is very patient, fabric patches, and "elbow grease !!!!!!" Once the stain is removed, then use Tarn-X Silver Glaze [soft varnish and protective film], exactly as directed on the label. do the job properly and you will be rewarded with beautiful jewelry silver and flatware.