Pearl is an organic gem and white is the classic color of pearl. Pearls have a long history of use throughout the world but until recently they were one of the more expensive stones.
With the culturing process pearls have become affordable. In the last 20 years the freshwater pearl has become of age and is now available in many different shapes, sizes and colors.
Most natural pearls have slight shades of other colors so they are often beached to give a pure white color.