A strange story indeed. Firstly I wonder about the alleged recipient of the gift. Wedding gifts are usually given to the bridal couple, not their parents. Why wouldn’t Onassis give the gift to the bride? As for MC’s fringe tiara: Vincent once informed us, that Mrs. Miller bought this tiara. So we have a fairly good source saying that it does not originate from Onassis. Afaik, the source of Alexia’s tiara cannot be traced. But it would be really strange, if the tiara had been lying in a safe all the time between the wedding and its first appearance in the 1990’s. Admittedly there weren’t many tiara occasions for Queen Federica during the exile. But the family had to sell jewels in order to fund themselves. And it seems illogical, that they sold family heirlooms while keeping a tiara of no historical value.