I have had these "glasses" for some time. But I'm not really sure what they are or what the value of them would be. Would anyone be able to help please?
If you look under 'stone cups onyx' on that one website where people sell stuff, I saw a couple of 'bar sets' very similar to yours, some even including the storage box as well. They are still pretty nice looking and I've always thought onyx items were neat. Perhaps you can glean some information from some of those offerings. Cheers!