A necklace

A necklace and matching earrings suite worn by Diana, Princess of Wales, at her last engagement in 1997, is going on sale.

Known as "The Swan Lake Suite", it was worn by the late Princess when she attended a performance of the ballet "Swan Lake" at the Royal Albert Hall shortly before she died in August 1997.

The jewels were a gift to Diana from her partner, Dodi al-Fayed. The necklace is a stunning piece encrusted in 178 diamonds (totalling 51 carats), and five south sea pearls.

At the time, the earrings had not yet been fitted with their pearls, so Diana had them sent back to the jeweller to have them completed following the event. She unfortunately had passed before she was able to receive them back.

Its current owners, who are Ukrainian, are selling the suite as they have fallen on hard times due to the War. A portion of the proceeds from the sale will be donated to Ukrainian reconstruction efforts.

The auction is set to take place at an American auction house, Guernsey's, on June 27th. It's expected to fetch up to $15 million (£11.9 million).