Blonde and Red Hair Colors are Not 'Going Extinct'
Genes rarely die out. Although red and blonde hair come from recessive genes, they can be carried for several generations without showing themselves until the perfect storm happens. In fact, you can practically pinpoint what color hair your child is going to have based on your family history.
Diamonds Aren't All Formed from Coal
Actually, most diamonds don't come from coal. Diamonds are formed by carbon that is compressed and superheated 90 miles below the Earth's surface. Although some diamonds can be formed from coal, it's usually too shallow to provide an environment for diamonds to form.