The 'Virgin Rainbow' is one of the world's rarest and most expensive opals. This extremely rare opal exhibits incredible fluorescence with a rainbow of different colors that make opal so ...

After unearthing a stunningly rare "Yowah nut" opal in outback Queensland, Dave Darby had a choice to make about where it went. He chose to keep it in Australia and let everyone share in its beauty.

The opal, pulled from rock in Indonesia and nicknamed “Beverly,” contains the shell of a tiny cicada nymph. In June in Scientific Reports , researchers explained how it likely formed .