Are nickel beads chemicals?

Chemical nickel is not dangerous. The chemical formula of nickel is Ni, which is almost silvery white, hard, ductile and ferromagnetic, highly polished and corrosion-resistant.

Nickel belongs to the iron-loving element. It contains the highest nickel in the earth's core and is a natural nickel-iron alloy. It is used to manufacture stainless steel, high-nickel alloy steel and alloy structural steel, and is widely used in various military manufacturing industries such as airplanes, radars, missiles, tanks, ships, spaceships and atomic reactors.