“Pearls are always appropriate,” Jackie Kennedy Onassis once quipped. The former first lady is not the only style bastion who has coveted (and raved about) these lustrous objects over the decades – Coco Chanel and Grace Kelly rarely left home without a strand or two around their necks, or a dazzling drop hanging from their earlobes. But they knew, as any jewellery lover does today, that not all pearls are made
