Many years ago while in England I took a tour of Blenheim Palace which is in Woodstock just 8 miles from Oxford. While there I first heard about Consuelo Vanderbuilt. Consuelo was an American heiress who was forced by her mother to marry the Duke of Marlborough. Her life story is fascinating and I highly recommend her auto biography" The Glitter and The Gold". It really gives you a window into the life of the wealthy in the late 1800's and early 1900's.
Wow! That's some serious jewelry!