In this video, I take a 79 ct chunk of Lightning Ridge seam opal and make a large cabochon out of it. I also take a worn out 7 carat black opal from a ring and give it some life! One of the biggest problems that can occur in opal is shown: Ginger Whisker

Optical Dopping Kits here
https://www.opalauctions.com/stores/5...