Talking about gem, the garnet is loved by many people. As containing in different metallic elements, the garnets present different colors, those contain magnesium present yellow color, those contain iron present red color, while those contain manganese represent purple color. There is a purple beach on the side of the Californian No.1 highway, its Pfeiffer Beach. The bases of the purple sand is garnets contains in manganese. This fine and smooth purple sand beach is also the only one purple beach in the world till now. The average diameter of the purple grain of sand is just 1/100 millimeter, so it has lost the value as gemstone, but the wonderful view like purple waterfall it forms makes people enchanted.