All of the Queen's Most Amazing Necklaces

The queen's great-great-grandmother won a box of emeralds in a lottery, and upon her passing, they were left to her wayward son, who in turn left them to his mistress. Queen Mary purchased them back from the woman, and they were used to create the necklace which she wore to the Delhi Durbar — the lavish celebration in India which marked the coronation of her husband King George V. Not only does the necklace feature the infamous emeralds, but it also contains part of the Cullinan diamond — the largest diamond ever found.