Heme necklace in silver 925 and the oxygens in 18K gold

One half of 2018 year’s Nobel Prize in Chemistry is awarded to Frances H. Arnold. She conducted the first directed evolution of enzymes, which are proteins that catalyse chemical reactions. Heme is a cofactor in the chemical reactions of many enzymes.

A handmade silver jewelry of the heme group in silver wire with the iron atom as an oxidized silver ball and the four oxygen atoms in 18K gold.