Gem Coober Pedy Opal Rub 8.6cts Red/Orange Multicolour Fires Australia Crystal

I have for sale a Hifgh Grade Rubbed/Rough Coober Pedy Opal from Australia. This one weighs 8.6cts and is 20x12x8mm. Slightly Milky Gem Crystal Opal with Bars of Reds/Green/Oranges running through it. Skin/slight sand in the back.  Thick Clean opal in this stone, will cut a superb cab worthy of Gold/Slilver, or keep as an investment. Thanks for looking.