Thanks for this,
@Chase.
Lucy and I have been working on this together.
So far, there are 4 rings created by Wallace Chan that are mostly ruby/diamond that Carmen may have acquired, and no clues as to which it might be, so clearly, that's not important.
I did look for and find several jewelers in that area, but only one seemed have really good reviews for fixing rings, Gioielleria San Marco, which seems to be a family business, and in no way, would have led me to find Carmen's personal jeweler.
I have looked up a these biennale art things; and that has been the most perplexing thing. There is one going on I in Paris NOW, but not from May-July, 2019. So, that seems to be a dead end.
So, I'm choosing to focus on the Art Biennale in Venice, Italy, from May 11-Nov. 24 (closed Mondays, except May 13, Sept. 2, Nov. 18) at Giardini & Arsenal 10 am-6pm. That's all that I can find now.