6.16 ct Impressive Fancy (19 x 10 mm) 100% Natural (Un-Heated) Australia Boulder Matrix Opal Loose Gemstone. Boulder Matrix Opal. 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.