Signet Jewelers Ltd. (Ratner Group 1949–1993 then Signet Group plc to September 2008) is, as of 2015, the world’s largest retailer of diamond jewelry. The company is domiciled in Bermuda and headquartered in Akron, Ohio, United States. The group operates in the middle market jewelry segment and has number-one positions in the US, Canada and UK specialty jewelry markets. Signet Jewelers owns and operates the companies Blue Nile, Zales, Kay Jewelers, Jared,, and others

The group was founded in 1949 and grew organically before expanding rapidly through a series of acquisitions in the late 1980s and early 1990s. It was formerly known as the Ratner Group.

As a purpose-driven and sustainability-focused company, Signet is a participant in the United Nations Global Compact and adheres to its principles-based approach to responsible business. Signet is a Great Place to Work –Certified™ company and has been named to the Bloomberg Gender-Equality Index for four consecutive years.

According to; Source of photos: internet