Very beautiful jewels. The pearls look really large, it seems that they are families with hidden master pieces as the drop pearl looks extremely large. I know we have discussed on here before who was in possession of some of the most extraordinary and grandest/ largest pearls but is it possible they are pearls and other jewels out there privately owned and maybe in some royal vaults that would outrank some of the ones thought to be at the top of the pile. I think this lady's pearls needs some more research and investigating.
Regards,
Dave.

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Based on the size of the stones (and the pearl), could these possibly be rubies?