Cutting an ultra-rare Australian Black Opal pair

Cutting a huge semi-black Australian Opal into a unique cabochon.

I froze a $100,000 Black Opal for two weeks, this is what happened...

Recutting one of the finest Black Opals you will see.

Cutting a super gem Australian Black Opal from rough. Will the red remain in the final gem?

Finale from cutting an insane 130 carat Black Opal rough. How did it turn out?