The discoloration of pores and skin beneath a gold ring, manifesting as a darkish or black mark, is a standard incidence. This phenomenon is primarily attributable to a chemical response between the metallic within the jewellery and substances on the pores and skin. These substances can embody perspiration, cosmetics, lotions, and even hint components current within the air.
Understanding this response requires acknowledging that the majority gold jewellery isn’t pure gold. Pure gold is just too comfortable for on a regular basis put on, due to this fact it’s alloyed with different metals, comparable to copper, silver, or nickel, to extend its sturdiness. The presence of those alloys, notably base metals like copper and silver, will increase the probability of reacting with environmental components.