Hi, I bought this ring myself in Tiffany's in New York. I wore a little but has been sat in my jewellery box since. I can guarantee authenticity but I didnt keep the box or bag as been over 20 years. I have tried my best to find an accurate size, I think it close to a UK I ( i ) The ring is small and fits on my ring finger. I have added the details from the app I used to size. The inside diameter measures 7mm I have buffed and cleaned the ring :)
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