This 18K white gold Kimberly Mcdonald Boulder diamond and opal ring features an open band at the front with a triangle-shaped opal and a round opal at both sides, finished with a diamond border. Constructed from 18K white gold, this Kimberly Mcdonald ring is a solid 10, after all, as our good friend Anna Dello Russo attests: 'it's all about gold. It's all about gold, gold, gold, gold! Excess!'