You may have heard over the years that there is a different type of gift that is customary to give on each wedding anniversary, depending on the number of years of marriage. For instance, traditionally the first anniversary is occasion for a paper gift and the second cotton, while the fifth anniversary is the perfect milestone for giving a gift made of wood. Under this traditional anniversary gift giving paradigm, the gifts tend to be more valuable as the years go on, with the tenth anniversary gift reaching the splendor of tin or aluminum and the fifteenth anniversary being a gift of crystal. And only after a quarter of a century of marriage do the gift types begin to suggest jewelry, starting with the beautiful precious metal silver on the twenty-fifth anniversary. The precious metals and fine gems take over from there, with the traditional fortieth anniversary gift being ruby, the forty-fifth sapphire and the fiftieth gold. After sixty years of marriage, the traditional anniversary gift is a diamond, a highly valuable gem representing stability and longevity.