All five pieces from the personal collection of actress, author and columnist Dame Joan Collins sold at a Bonhams jewellery auction yesterday.

Furthermore, the collection on average achieved three times its presale estimate, while part of the proceeds went to the Shooting Stars Children’s Hospice, for which Collins is a patron.

The collection included a fancy pink diamond and diamond ring by Meister, circa 1968, which sold for £838,750, surpassing its pre-sale estimate of £550,000 – 750,000.

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Next, an exquisite and rare diamond brooch by Van Cleef & Arpels, circa 1935, achieved eight times its pre-sale estimate of £15,000 -20,000, realising £122,750.

In total the behind-closed-doors sale from Bonhams’ New Bond Street premises made £3,769,123, with 75% sold by lot and 81% sold by value.

Bonhams’ global head of jewellery, Jean Ghika commented: “We are delighted with the results of today’s sale.

“Despite taking place behind closed doors, the bidding remained spirited and the results demonstrate that high quality pieces with extraordinary provenance continue to captivate buyers around the world.”

Read more about Collins’ jewellery below:

GALLERY: Dame Joan Collins’ jewellery goes on sale at Bonhams London