Life Element: Carbon.
Turning cremation ashes into diamonds is possible because Carbon [C] accounts for 18% of the human body and diamonds are crystallized carbon. Cremation diamonds are genuine diamonds grown by using the carbon contained within hair or cremation ashes.
Nitrogen [N] accounts for 3% of the human body, which gives a cremation diamond a Naturally Amber™ colour, varying from light yellow to deep orange.
Purely Colourless™ diamonds are created by removing nitrogen [N] from the carbon [C] prior to making a cremation diamond from the ashes.