OOM: The explanation is simple. You believe that women like diamonds because they are programmed like that when they were born. That there’s no logical reason, and that’s why diamonds are loved by women all over the world.
However, a smart person can tell you, that before the 1900’s, the concept of giving a diamond to get married was a very foreign idea. This “natural” deisre for women to get glittery expensive jewelry didn’t exist not so long ago.
De Beers created that image, using advertising such as “diamonds are forever”, and since they hold about 70% of the world diamond supply, they profited heavily.