Blue Eyris Pearls - Pearls from the sea creatures known as abalone are incredibly rare. They cannot be cultured like the pearls from mussels and oysters; abalone are all hemophiliacs. They bleed to death when injected with a nucleus. in nature
Black Opal from Koroit, Australia. Koroit is located approximately 1000 kilometres from the east coast of Australia, right in the heart of Outback Queensland. The opals from here are unlike opal anywhere else in the world.
Opal: " For in them you shall see the living fire of the ruby, the glorious purple of the amethyst, the sea-green of the emerald, all glittering together in an incredible mixture of light." ~ Roman Pliny the Elder on Opal, Century AD--iridescence