Head to London’s Knightsbridge and you’ll find a store called Minas - a luxurious emporium of jewellery for men named after its founder, the Greek goldsmith Minas Spiridis. While he does design for women, the majority of his clientele is male. Believing that men are looking for something a little bit different from their jewels, his modern accessories include pendants that double as working spirit levels, bottle openers and whistles.