Signet Jewelers Limited (Ratner Group 1949-1993 then Signet Group plc to September 2008) is the world's largest specialty retail jeweller. The Bermuda-domiciled, British headquartered company is listed on both the New York Stock Exchange and the London Stock Exchange. The group focuses on the middle mass jewelry segment and has number one positions in both the U.S. and UK specialty jewelry markets. Certain brands (Jared in the U.S. and Ernest Jones/Leslie Davis in the UK) are targeted at the upper middle market.
周生生集團國際有限公司(Chow Sang Sang Holdings International Limited,港交所:0116),以其簡稱「周生生」在大中華揚名顯赫的黃金珠寶企業。周生生起源於1934年在中國廣州市開展的同名金行業務。創辦人取名喻意「周而復始,生生不息」,既包含了他的姓氏,也表達了他對企業的祝福。