Soon after this rebranding, Chocolate Diamonds took off ... making it one of the world's most expensive gemstones. Over 90% of black opals come from Australia, but they aren't easy to find.

Black Diamond apples (Malus Domestica ... produce fruit two months out of the year and it's clear why they are both expensive ...

Diamond is considered to be the most precious and expensive gem in the world. But if we tell you that diamond is not the most expensive and rare gem in the world, will you believe it? But this is ...