Nickel - Ni
The Dutch coin "dubbeltje", used before introduction of the Euro, consists of almost pure nickel. Its nickel content is 99.5+ %. One such little coin has a diameter of approximately 1.5 cm and has a weight of 1.50 grams.
Below follows a picture of more Dutch coins. All of these have a nickel content of 99.5+ %. The large coins have a mass of 3 gram, the small ones have a mass of 1.5 grams.