I suspect many have been broken up and reset. My personal dream is they were all properly photographed before they were broken up, if not for appreciation of their beauty but simply as a record, the Communists were assiduous record keepers!


There is that very sad picture of the Yussopov jewels and those of Grand Duchess Xenia being laid out on a table as jewellers are in the background breaking them up - at the time this was happening in the 1920s there was a flood of Russian and European jewels on the market and the value had dropped, so maybe there was the sense that the stones were worth more individually as opposed to set within a tiara or necklace.

http://orderofsplendor.blogspot.com/2016/10/tiara-thursday-yusupov-diamond-sunburst.html