14K Yellow Gold And Silver Diamond Necklace

This was an impulse buy, as I'm sure many of you totally understand. I've not worn it, and it's just lovely. It's stamped 14k gold with 925 sterling silver and was made in Italy. It is 17 x 12 mm and 6 mm in thickness. It has 35 cts diamond I color SI2 clarity. The chain is a sturdy 17.5" length necklace and the total substantial weight of item is 11 grams. It's a beauty and has been kept in satin. I paid $650.00 US and would be worth quite a bit more I would think. Non smoking home.