The Lotus Flower Tiara
The Lotus Flower tiara was originally a necklace owned by the Queen Mother in 1923. She then changed it to become a tiara and later gifted it to Princess Margaret. The tiara, comprised of diamond arches and pearls was then given to Kate Middleton. It is estimated to be worth about $4 million.
The Delhi Durbar Tiara
First appearing in 1911, the Delhi Dulbar tiara was created for Queen Mary to wear at the Delhi Durbar. It was later passed on to the Queen Mother, Queen Elizabeth II, and has also been loaned to Camilla. The diadem is worth about $2 million and features many diamonds and emeralds.