A diamond is a stone that truly states, “I love you” in a deep way. In fact, you’ve probably heard the slogan many times that “a diamond is forever.” This is because of the stone’s symbol of deep, everlasting love, as well as the fact that it’s the hardest substance known on earth. The diamond is also the stone that marks the 60th anniversary of marriage, and is the birthstone for the month of April. It is believed that the first diamonds were discovered in India, at least 3000 years ago, but more likely as long as 6000 years ago. In Ancient India, people viewed diamonds as religious icons.