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
Diamond 55745 / diamond (crystal, silver-gray, octahedron) Mbuji-Mayi, Kasaï-Oriental (East Kasai), Democratic Republic of Congo. Photo: The Natural History Museum of Los Angeles County From Bradley Martin
This looks like a black pyramid, but is actually an uncut black diamond from Sierra Leone. Gem-quality black diamonds are rare; they are mainly used in industry because of their ability to cut the hardest materials. Looks like a little pyramid.
"Idol's Eye" Diamond with Harry Winston Necklace Object Name: Diamond Date: Diamond: early century, Necklace: mid century Culture: Islamic Medium: Antique triangular modified brilliant-cut light blue diamond