David Yurman dares to use a stone that is truly out of this world: 4-billion-year-old Gibeon Meteorite. It fell in Namibia in prehistoric times, but its first recorded discovery was in 1836. This remarkable stone features crystals of iron and nickel that give it its distinctive patterns. To know that it is some of the oldest material known to mankind is truly astonishing. To wear it is to carry a piece of the heaven with you.