by Bellyd » Aug 25, 2019 I have a Platinum and diamond ring I hope to sell soon. I know little about the ring and would be grateful for any help anyone could provide. It has never been appraised, but for now, I am really interested to know how old it is. I have had it 40 years; it was given to me from someone who purchased it at a pawn shop. The only marking is '10% irid plat'. I am new to this type of research, but I did read somewhere that Platinum jewelry marked in that particular way are probably 1930's or older. Is that accurate or not? I tried to find a similar image of the ring on internet but didn't really see anything comparible, but I am not a very good researcher! What style would this be considered? I thank you all for any help or info.