Australian Black Opal
Business Insider reports on the elusive Australian Black Opal gemstone that, according to BI, is one of the most expensive gemstones in the world.
So what does Black Opal look like?
Per Business Insider...
"Black opal is one of the most enchanting stones in the world, sought after for its seemingly infinite display of colors. Compared to common opal, which is usually one color, black opal exhibits many different colors contrasted by a dark body tone."
How expensive is it to mine?
"Really, if you wanted to rock up here and be serious, it'd probably ... need $150,000 to $100,000 in your pocket to have a go."