What is the main reason for the black smudges?it is gold then why does black get on you clothes? this used to be one of the great mysteries of jewelry but now the most likely reason is make-up.that means make-up like ladies wear. Make-up is ground into very fine particles and seems smooth.with a really close look with magnification, make-up has very fine particles in it. these particles act just like sandpaper on the gold!
Since the sanding action is so very fine, the particles of gold that rub off are too small to show the gold color to the eye and simply look black, like a smudge. I believe this is about 90% of the problem ladies have with gold showing smudges on skin or clothing. Seems strange but this is true!
Other reasons for the black smudges. Is, if you don’t wear make-up that could be getting on the necklace, there are some possible other reasons. The problem with these are elusive and hard to track down to one reason or the other for the smudges. If you have worn gold like this before and had no problems, it becomes sort of a detective case. ask yourself if make-up brand has changed. ask if any meds might have changed. Ask if you are using a hot tub or swimming in the new necklace.
We have already talked about make-up. the meds is mentioned simply because in some cases, changes in medicines can affect the body chemistry and the chemicals the necklace will contact on your skin. This can sometimes lead to smudges from a chemical reaction to the jewelry metal.