Lady Diana Spencer and Charles, Prince of Wales, became engaged in February 1981. Her engagement ring consists of 14 solitaire diamonds surrounding a 12-carat oval blue Ceylon sapphire set in 18-karat white gold. It was created by jeweler Garrard and cost at the time, 28,000 pounds sterling. Prince William, gave it to his longtime girlfriend, Catherine Middleton, the future Duchess of Cambridge in October 2010. After the announcement of the engagement of the couple, the engagement ring has become popular selling copies of it.