Fingers changing color due to poor quality metals is a common misconception and is not at all related to the material your piece was made from. This effect is also easily remedied and explained: Before we send out pieces, we buff and polish them for shine, and then clean them so that they arrive in the best-looking state possible. Sometimes, the agent that we use to buff and polish the pieces leaves residue that the cleaning does miss. We clean the pieces several times before sending them out but sometimes even that isn't enough to remove the residue that causes the reaction in your skin. Fortunately, this is fixed by cleaning the ring with mild soap and water, up to a couple times if it doesn't work completely the first time. If you have tried cleaning your ring multiple times and it is still causing a reaction on your skin, please let me know as soon as possible and I will contact you with further instructions.