Rare white dwarf star transforms into cosmic diamond.

A group of space scientists have discovered a white dwarf star, HD 190412 C, that appears to be in the beginning stages of crystallizing into a celestial diamond. The white dwarf, located approximately 104 light years away, is made mostly of metallic oxygen and is part of a quadruple system called HD 190412. The researchers have been studying the cooling delay in the star due to the crystallization process to determine how far along it is on its path to becoming a celestial diamond.