I thought it looked like sim tanz but many said it wasn't so..... I once, many years ago, had an opportunity to buy a real omega necklace with a solitaire tanz....I didn't buy it because I would have had to make payments over time on it. I wish I had done it anyway because it ( today) looks like I would have had a one of a kind valuable PC of jewelry to enjoy and watch value increase on it. Oh well 😢