The diamond was finished days after Wellington’s death. The bill for the recutting came to an eye-watering 8000 pounds – the equivalent of more than a million pounds today. Despite all the assurances from Coster and Garrard, the Koh-i-Noor did not retain ‘the majority of its size and value’. Instead, what was left was unrecognizable. The cut had more than halved the Koh-i-Noor’s mass from 190.3 metric carats to 93 metric carats. It now sparkled brilliantly, but could lie meekly in the palm of a hand. News of the reduction left Prince Albert devastated and he braced himself for savage criticism
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