AKRON, Ohio, 2015-12-7 — /EPR Retail News/ — Signet Jewelers (“Signet”) (NYSE and LSE: SIG), the world's largest retailer of diamond jewelry, announced that it will elevate its already well-established relationship with PANDORA Jewelry, one of the world’s largest affordable luxury jewelry brands, in its number one destination jewelry store in the United States, Jared® The Galleria…