17 Dazzling Star Sparklers

These gems have five Cs: cut, color, clarity, carats and celebrity! See the big bling worn by Hollywood's most engaging women

CATHERINE, DUCHESS OF CAMBRIDGE

Before receiving her royal title, Kate received a royal bauble from Prince William in November 2010: the sapphire-and-diamond ring Prince Charles used to propose to Princess Diana. The 12-carat oval Ceylon sapphire is surrounded by 14 diamonds and set in 18-karat white gold.



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