Andreas von Zadora-Gerlof likes to say that he's turning time on its side. After all, the faces of his new bespoke watches feature not mundane hour and minute hands but elaborately bejeweled miniature frog princes, snakes and, for more delicate types, pink flowers....

Diamond skulls are so last week. Tomorrow, an array of gemstone skulls created by Andreas Von Zadora-Gerlof will go on display at Hamilton's Gallery in London. The exhibition, entitled Memento Mori, is the product of a year of what the glyptographist calls a "battle...