Diamonds have been referred to as a girl's best friend. The gem has maintained the title from 1949 when Gentlemen Prefer Blondes first aired on Broadway to today's click-bait articles. However, the strongest material on Earth is quickly losing its title. Fewer millennials are buying diamonds compared to any other generation. Interestingly enough, millennials have spent billions on other stones, instead. Many are scratching their heads wondering what to do about the situation, but its best to look at the reasons why first. Ethics Everyone knows that not all diamonds are mined in the most ethical of ways. Considering how many millennials...