18k gold
gold
Au is the chemical symbol for Gold. Therefore, it means the ring is made of pure gold.
It is a jewler's seal that a jewler stamps onto his or her work of jewlrey to prove he or she made it and there are a lot of different ones.Ok?
are you sure that is av and not posible au because the 79 element on the periodic table of elements au is gold
I had the same question. And there seems to be some contradiction in AU. I have found a maker of the name Archibald Ure a silver and gold smith from Edinburgh, Scotland 1700-1730. However, I don’t believe the earrings I have, and are marked 925 AU c, are from 1700s. I haven‘t found any other makers with the copyright AU yet.
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