Lalique Nina Ricci Frosted Crystal Pendant Dove Gold Plated L'Air Du Temps on 24" 1/20 12k Necklace. See pics. Pre-owned vintage item. I have not cleaned or polished. Necklace lobster ring is marked 1/20 12k gold. The pendant has a semi precious stone that was loose. I shared a video of it falling out of the set. So I will include it in a little baggie and if you decide you can try and reset it or glue it in. I don't think it is a diamond, maybe a sapphire. I tried to test with the presidium gem tester but couldn't get a good reading since the gem was loose. You will see pictures of them gem in place and others that it is not. Please message with any questions. I am not a jeweler. All items sold as is.