What Exactly Is A Black Opal?

There's a reason that Adam Sandler goes crazy for a black opal in 'Uncut Gems'. We spoke to the experts to find out what a black opal is and why black opals are so expensive

Black Opal 8.5 x 8 x 3.5mm 1.55 cts Auction #1110872 Opal Auctions

1.55CT GEM BLACK OPAL LIGHTNING RIDGE CT399

Searching for the ultimate black opal. I found it after 60 years

Black Opal, Dance of Minerals » Geology Science

The Value of Australian Opal: What Is Opal Worth – Black Star Opal

Black Opal - Absolute Opals & Gems

Black Opal From Lightning Ridge For Sale

2.35CT TOP GEM RARE PATTERN BLACK OPAL LIGHTNING RIDGE CT1087

Black opal, Forgotten Realms Wiki

What is Black Opal ?

Natural Ethiopian Black Opal Gemstone, Opal Stone, Loose Gemstone