Bling it on – jumbo jewels are back

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Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter.

High jewellery’s “big three” centre stones were traditionally a fine ruby, an impressive emerald or a silky sapphire. These were valuable gems presented as “specimens”, judged on value, rarity and perfection according to strict industry classifications. But the rules have changed. This season’s high jewellery collections proved that the dramatic centre…