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What a great topic MarcA! This collection was totally unknown to me. I hope we can all pool some knowledge. I wish I could see the catalogue with her jewels which were sold in 1986.
I see that she donated what is now referred to as the Bismarck sapphire to the Smithsonian in 1961. The Cartier necklace was made in 1935 using a sapphire which she and her then husband purchased on their honeymoon. The sapphire is a staggering 98.57 carats.