The reason why people buy diamonds is not because diamonds are rare, or precious. It is because advertising agencies have cleverly devised marketing techniques which has convinced millions of people that diamonds are a “girls best friend.” Many women have been taught and have come to believe that if your spouse doesn’t buy you diamonds , than he doesn’t love you. The reality is that diamonds are worthless gems that are as common as beach sand. So if your spouse doesn’t buy you diamonds it’s most likely because he does in fact love you.