Why Does Gold Discolour Fingers?

You may think that faulty manufacturing or underkarating might be the problem when a ring "turns," blackening or discolouring the skin and clothing, or the jewellery itself.   However, that is not the case.   It helps to understand the causes, and how to prevent them. 

For a discussion on allergic reactions - rash and infection from jewellery click here

Metallic Abrasion

The most common reason is metallic abrasion, caused by makeup on skin or clothing.  Cosmetics often contain compounds harder than the jewellery itself, which wear or rub off very tiny particles. 

Very finely divided metal always appears black rather than metallic, so it looks like a jet-black dust.  When this dust comes into contact with absorbent surfaces such as skin or clothing, it sticks, forming a black smudge.

To prevent this, you should try switching cosmetics.  If this is not possible, we recommend that you remove rings and other jewellery while applying them, and clean skin areas in contact with jewellery with soap and water.