Set in sterling silver with a round ring shank, this beautiful Australian Boulder Opal is like a perfect storm in a stone, a dreamy, painted look—like a little sunset sky caught in silver. 1/2 of the stone has a gorgeous sliver of blue green flash and the other encompasses, full pastel rainbow with hints of pink, green, blue and purple in a gorgeous, chocolatey colored host stone

Size 5, stone measures 14mm x 12mm. 

(Measures right at a 5, but the flat back of the setting makes it a generous fit a little closer to an 5.25)