Hi, this is a piece I bought in Bulgaria,oh no! I hear you all cry, but so far it has withstood all the tests for authenticity that I have tried. It floats in saline solution & it gives off a lovely resinous smell when pierced with a hot pin. It looks too good to be true I know & is posing beautifully . It appears to have been removed from a brooch mounting at some point. Is there any other test I can try? thanks guys