The Rainbow Opal - Australia It is an opalised fossil formed as a result of an extraordinary set of natural forces, found uniquely in South Australia. Weighing 72.64 carats, it is a uniform, solid block of intense colour discovered in Coober Pedy in 2003. It is also extraordinarily rare – being an opalised fossil of a belemnite, an ancient squid-like creature over 100 million years old.
Amazing 'Fire Rainbow' Image Captured In South Florida
So-called "fire rainbows" are neither on fire nor are they rainbows, but they sure are stunning. They are technically known as iridescent clouds, a relatively rare phenomenon caused by clouds of water droplets of nearly uniform size, according to a release by NASA. These clouds diffract, or bend, light in a similar manner, which separates out light into different wavelengths, or colors.