O-5 Orbital Silver Necklace

925 sterling silver necklace. It consists of a lower piece of 20 mm diameter 0.85 mm thick and four sides of 11 mm and 0.56 mm thick. Round link chain 41 cm long with carabiner closure. Total weight 6.1 g. The pieces are a schematic representation of the atom, and are distributed symmetrically, transmitting to the whole beauty and harmony.