The phenomenon of a gold ring inflicting pores and skin discoloration, particularly a darkening or blackening, on the finger is a standard prevalence. This response isn’t essentially indicative of poor gold high quality. The first cause for this pores and skin discoloration stems from a chemical response between the metallic alloys within the ring and substances current on the pores and skin, similar to perspiration, cosmetics, or lotions.
Jewellery, together with gold rings, is commonly alloyed with different metals like copper, nickel, or silver to reinforce its sturdiness. These metals can react with acids and salts secreted in sweat, forming metallic salts. These salts then go away a darkish residue on the pores and skin. The quantity of discoloration can range relying on a person’s physique chemistry, environmental elements, and the precise alloy composition of the jewellery. Traditionally, understanding the composition of metallic alloys utilized in jewellery has been essential in diagnosing the causes of such discoloration.