Serotonin necklace the molecule of happiness in silver offers

This handmade necklace in 925 silver, represents the molecule of serotonin, that particular substance that our body produces when we are relaxed and happy.
The total length is 45 cm, the only central piece is approximately 6.5 cm x 3.5 cm.
If you want the longest or shortest necklace, just ask for it.