Nice find Jim Bob! I see you're still hitting the old lake. Just watch out for the old guy with the shotgun, lol. Any chance you'll be going down to Florida this winter? Take care my friend.
NOT to be a spoil sport but I would check that thing with a magnet. ALL my finds marked Italy are FAKE. They attract to a magnet ever so slightly, especially a rare earth magnet out of a hard drive but they are all FAKE. Silver chain, silver bracelet, gold chain. FAKE.
Get a powerful rare earth magnet, hold the chain on one end and let it dangle, then move the magnet close to the chain and see if the magnet pulls it closer.