Diamonds are perhaps the most recognizable gemstone in the world. Made of pure carbon, they are second to none in hardness topping the Mohs scale at a 10. In fact, Diamonds are so hard that only tools coated in powdered Diamonds will cut them! Coming in a variety of colors, Diamonds can be blue, champagne, black, pink, yellow, purple and many other colors. Diamonds sparkling with intense color are rare and may be priced higher than a colorless Diamond of equal size. Because fancy-color diamonds are very desirable, color is sometimes introduced in a laboratory. These are correctly called color-treated Diamonds. When purchasing a fancy-color Diamond, the shopper should ask if any enhancements or treatments were used to improve its color and/or clarity. Diamond is the birth stone for April and is used as a symbol for purity and an amplifier of energy. As the strongest gemstone, it's only fitting that Diamonds are said to bond people together (and not just because they're so pretty). Strength is not the only physical element that shares a dual metaphysical benefit—all that multifaceted light bodes well for intellectual and emotional enlightenment. In other words, if you're feeling foggy with decision-making, a Diamond might help clear things up. Diamonds are said to promote relationships, love, and mental clarity.