Is diamond the rarest gem?
No. Although some diamonds are gems, they are not very rare. Consider the fact that nearly all married women, and many unmarried women (at least in the United States), wear at least one diamond. That’s not rare at all. The illusion of diamond’s rarity is more due to market manipulation and advertising by the big diamond companies than true scarcity. In reality, there are many gems much rarer than diamonds. Emeralds and rubies come to mind, for example. There are other gems even rarer than emeralds and rubies.