April

Diamond

Color: Usually transparent, sometimes blue

Information: Diamond is the hardest naturally occuring substance. Due to its hardness, it is the most enduring gemstone. The rock where diamonds are found is blueground. Yet, about 1 carat (200 milligrams or 0.2 grams) of diamond is all that is found in 3 short tons (2.7 metric tons) of blueground. There are 4 basic diamond mines: Africa, India, Russia, and South America.