The mysterious case of Kate”s disappearing ring: Why we saw the Duchess”s sapphire sparkler… then it was gone

10:00 AM on 1st October 2011

Duchess of Cambridge Duchess of Cambridge

Mysterious case: The Duchess of Cambridge was wearing her sapphire engagement ring when she arrived at the Royal Marsden in London yesterday (left) but it had vanished by the time she left two hours later (right)

Duchess of Cambridge Duchess of Cambridge

The most famous engagement ring in the world: It didn”t take long for a few people to notice that the Duchess of Cambridge”s ever-present sapphire and diamond sparkler had vanished

Duke of Cambridge Prince, President of The Royal Marsden NHS Foundation Trust, and the Duchess of Cambridge

Hospital protocol: The Duchess left her ring and clutch in the care of hospital staff for hygiene reasons. The Duke had removed his jacket, tucked away his tie and rolled his sleeves for the same purpose

Duchess of Cambridge

Sparking form: The Duchess also wore a small silver, diamond-studded cross on a chain and diamond earrings by Kiki McDonough, which she was not required to remove

Duchess of Cambridge Duchess of Cambridge Duchess of Cambridge

Elegant: Catherine wore an Amanda Wakeley dress with an LK Bennett clutch and heels for the hospital visit