The collision of a dwarf planet may have sent a strange diamond to Earth

The strange hexagonal diamond may have been dumped into space when a dwarf planet collided with a large asteroid about 4.5 billion years ago.

New research has identified hexagonal diamond, also known as lonsdaleite, in a rare class of meteorites It may come from the mantle of a dwarf planet. Like graphite, coal, and diamond, Lonsdalite is a special structural form of carbon. Where the carbon atoms in diamond are arranged in a cubic shape, the carbon atoms in Lonsdalite are arranged in a hexagonal shape.