10.61 ct Topnotch Fancy Cabochon Shape (24 x 12 mm) Multi Color Australian Koroit Boulder Opal Natural Loose Gemstone. Boulder Opal. Shape Fancy Cabochon. Mohs Hardness: 5.5-6.5 Found in Australia History: Opal is a semi-transparent solidified mineral composed of silicon and water.
A collection of love and memories woven into the story of you.