Steel
Our steel jewelry contains only stainless or surgical steel. Steel in particular has recently become very popular in jewelery making, partly because it resembles silver, but mainly because it is cheaper, more durable and does not need to be polished.
All steel contains a small amount of nickel (stainless about 8% and surgical about 10%), but it is so tightly bound in the steel that it does not precipitate more than 0.1 millionths of a gram per cm2 per week. The EU's limit value for products with nickel that have long-term contact with the skin is 0.5 millionths of a gram per cm2 per week. People with a nickel allergy can wear jewelry made of this steel without getting a rash. The entire pharmaceutical industry uses, for example, surgical steel.
The difference between stainless steel and surgical steel is the carbon content. Surgical steel contains more carbon and is also corrosion and acid resistant, which means that it can also withstand prolonged contact with chlorine and salt water.