Not a bad piece of crystal. It's a Belemite fossil by the looks. Don't believe the hype though.
Got to love the media. This happens now and again with opal finds, even old ones just to drum up some attention. It's just a lack of understanding on the general public's behalf that is often taken advantage of.
It definitely would be good to see it in person given the chance (and not on a black background as is the case with most crystal). That image is too over-saturated for my liking also.
Now I can go on my opal miner rant. Haha!
Is it the finest piece of opal ever unearthed? Hardly. Not even the best crystal ever unearthed. While the quality is there, it's only a small sized piece.
Just off hand for comparison, some good friends of ours had drilled on lumps of gem quality crystal opal at Coober Pedy out on the Olympic Field that were roughly the size of small house bricks and that are unsurpassed as far as crystal opal from Coober Pedy goes. They were worth several million dollars back in the early 80's.
They had taken my father to see them in Sydney while he was on a trip there selling opal. They weren't advertised at all. Slight security concerns coming into play there understandably (just like finding a huge nugget!). And I'm sure there are many more bits out there in private collections that would eclipse this piece.
I've seen and dug opal here in the Ridge over the years that would leave this piece in their dust.
Hopefully I don't come off sounding like "Captain Bring-down". Just shedding a little light and knowledge on the subject that I love dearly
Cheers,
Shauno.
EDIT: Spelling correction.