Weighing nearly 19 carts, this diamond is shaped like a heart and is surrounded by a platinum web that ends in a border of pavé diamonds. It was originally part of a stomacher designed for Queen Mary in 1911.

The Delhi Durbar was India’s answer to a coronation, a massive gathering to celebrate the succession of a new Emperor or Empress of India. And just like at a coronation, there are jewels aplenty – including this diamond-and-emerald necklace made for Queen Mary for the event.

After receiving an aquamarine necklace and pair of earrings from the president and people of Brazil in honor of her coronation, the Queen had Garrard amp Co., the former Crown Jeweler of the United Kingdom, make this matching tiara in 1957. She’s continued to update it through her reign, adding even more aquamarines and diamonds to the (already stacked) piece.

This brooch features diamonds, rubies and sapphire “flowers” and was a gift to the Queen from her parents following the birth of Prince Charles in November 1948.

This item is a sentimental one for the Queen – she wore it at her 1947 wedding to Prince Philip. And it’s as fragile as it appears: On the Queen’s wedding day, it broke before the ceremony and had to be quickly repaired for wear.

This oversized brooch features diamonds set in silver and gold, formed in a bow shape, and is another piece from Queen Mary’s collection that Queen Elizabeth inherited after her death in 1953.

According to www.people.com and www.vogue.com.au