On 11 July 1933, Rose Bingham was styled as Countess of Warwick when she became the first wife of the 7th Earl of Warwick. Her married name became Greville.
The important necklace on the top left, was made in platinum originally by Cartier in 1930s, with a central pendant of three drops flanked on each side by two pendants of two drops. The pave set centre with detachable double-drop pendant incorporated 13 emerald-cut diamonds and a pear-shaped drop.
The chain was of 38 brilliant-cut open-back collets with an elongated oval brilliant-set snap.
Nine drops were subsequently removed by Cartier to form the diamond tiara. The Countess of Warwick is pictured on the right in 1935 with both jewels made from the large necklace. The splendid necklace in its present form, as seen in the centre picture, was sold in July 1936.
It was then repurchased by Cartier in May 1937 and was in stock, until the Nizam of Hyderabad purchased it in 1947 for £5000 as part of the wedding gift to the future Queen Elizabeth II.