HAMILTON, Bermuda, 2016-Aug-27 — /EPR Retail News/ — Signet Jewelers Limited (NYSE:SIG), the world's largest retailer of diamond jewelry, announced today (August 25, 2016 ) that affiliates of Leonard Green & Partners, L.P. (“LGP”), a leading private equity firm, will invest $625 million in the form of convertible preferred shares. Signet will use the proceeds from…