A married couple's 70th wedding anniversary is called their Platinum Anniversary. The 70th anniversary of any important event can be referred to as a Platinum Jubilee, although this term is seldom used.
a platinum album is an album whose sales figures have reached a certain amount. This threshold differs from market to market - in the United States, a platinum album is one that has sold at least 1,000,000 copies.
^The color displayed in the color box above matches the color called platinum in the 1930 book by Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill; the color platinum is displayed on page 113, Plate 45, Color Sample A3.
^Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 202; Color Sample of Platinum: Page 113 Plate 45 Color Sample A3