
A cut (& colour) above the rest: Coloured gems have long been associated with craftsmanship
At a recent high jewellery auction in Geneva, Sotheby’s sold a breathtaking ‘fancy vivid blue’ diamond for a whopping $21.5 million. One of the most valuable jewels sold this year, weighing 10.03 carats, the ‘Mediterranean Blue Diamond’ was mined last year …