I found this little sweetheart yesterday and it doesn't have any markings in it. I thought it was silver because it was encrusted like most silver rings that have been in the saltwater for any length of time.

However, after doing electrolysis on it and cleaned it up, it isn't silver. A friend believes it's either 8K or 10K and I think he might be right. Unfortunately I don't have any acid for either . I have to find out if they even have acid for either. Anyone know if they have ?