20.60ct Koroit Boulder Matrix Opal | #E264 Topaz This indicates inclusions can be

This indicates inclusions can be seen with the naked eye

The Center Stone: Lightning Ridge Semi-Black Crystal Opal

ring height from finger: 8

Vintage squash blossom necklace set with Number 8 Mine turquoise stones

and Sri Lanka

20.60ct Koroit Boulder Matrix Opal | #E264 Topaz This indicates inclusions can beKoroit Boulder Matrix Opal Your browser does not support the video tag. Weight 20. 60 carats Origin Koroit Mining District, Queensland, Australia Shape Freeform Cabochon Dimensions (millimeters) 32. 80mm x 15. 90mm x 5. 80mm at thickest part Dimensions (inches) 1. 29" x 0. 63" x 0. 23" at thickest part Body Tone (+N1 to N9 ) N A Boulder Opal Brightness ( 1 to 5+) B3. 5 Predominant Colors Blue and Green Directionality of Fire Somewhat Directional