So... I have acquired a Tiffany platinum solitaire (coming in the mail shortly). I am 99.9% sure it''s the real thing, but need to make sure before I can''t return it anymore. Does anyone have any details about what I should be doing? I believe I take it to a Tiffany store and get it authenticated and re-valuated. I''m in the Philadelphia-area... do they do this at every store, or must it be shipped to the Flagship NYC store? And how long does this take, exactly? And how much will it cost me? I am pretty confident in it''s authenticity, but I only have 7 days to return it once I get it. Soooo glad it''s the weekend before V-day. Perfect time to be rushing something at Tiffany, isn''t it?
Thanks in advance!

Thanks in advance!