All jewelry is made of brass with 18 carat gold or rhodium plating with selectively selected crystals of the highest possible quality. All jewelry is approved according to EU standards as nickel-safe / nickel-approved, i.e. the nickel content that precipitates is below the permitted limit value (0.05%). Almost all metal contains some nickel, even if it is in extremely small amounts. The studs on the earrings used are made of 925 silver. All materials used in production are continuously tested for the highest quality.