Inflation is the rate at which the general level of prices for goods and services is rising and, consequently, the purchasing power of currency is falling. Central banks attempt to limit inflation, and avoid deflation, in order to keep the economy running smoothly. Next Up.
If you are not allergic to metal, the reason for this reaction is chemical. It's due to a combination of the metal and the acids in your skin. Experts say that there are several metals that oxidize with your skin to give you a noticeable green ring around your finger. A ring made of copper is a common culprit, but even silver and gold metals can cause discoloration.
Rhodium plated finishes are best in class for wearability among the precious metals. Additionally, rhodium is hypoallergenic. White gold normally employs nickel to provide the whiteness of white gold, however, approximately 20% of women will have some form of allergy to nickel. Thus, by rhodium plating, a possible allergen is removed from contacting your skin. The one exception to that is on white gold stud earrings. Because the nut of the earring drags along the post, the post will not remain plated for long. In those instances where nickel may be a problem, we recommend using platinum posts/nuts on a white gold basket, or simply going with platinum earrings. Rhodium plating can dramatically increase the long term durability, brightness and luster of the finish. Because it is a plating, it will wear off over time. How soon depends on how much wear and tear the jewelry item takes.