Maria Doulton: I assume that the buyer would wear it; is that the intention or do you think this would go into a safe straightaway?
David Warren: I have no doubt the buyer will wear it; jewellery is for wearing.
Maria Doulton: With this blue-green diamond here, it is an unusual shape, isn't it? Can you tell me a little bit about that?
David Warren: Yes, it's like a shield shape, this one. It is the 'Ocean Dream'. It's another vivid stone, a fancy vivid blue-green. This is 5.5 carats, vivid-blue green.
Maria Doulton: Very rare.
David Warren: Yes, we go from one rarity to another rarity, but this colour is exceptionally rare; I've never seen anything like that. Christie's are thrilled to have such great gemstones to offer this season. We continue our track record of selling the biggest and the best and look forward to more in the autumn.
Maria Doulton: All these diamonds and other jewels are for sale at Christie's, in Geneva, on 14thMay. If you want to see them for yourself, they will be on exhibition the weekend before the sale.