The luster of pearls is perhaps the most enchanting of all their qualities. It is the mysterious play of light that gives them their unique beauty and captivating us with its rainbow of colors. The luster of a pearl is determined by the thickness and smoothness of the nacre. The thicker the nacre, the brighter the light. The angle at which the light hits the pearl and the angle from which it is viewed affect the pearl’s luster. A play of light and color is created by the angle of the light. The way a pearl is viewed is very important. A pearl should be held up to the light and moved around to better appreciate its beauty. The luster of pearls is captivating people for thousands of years. The luster of a pearl is what sets it apart from the rest.