Prasiolite is the light green form of quartz. Our material is selected from kilos of rough direct from the mines. Our material is deeper in color, very clean and the cutting quality is superb. Because of the extra weight loss and extra cutting time as well as the expense of precision cutting here in the United States our material will be more expensive than most. When you recieve your gems you will see the extra expense is well worth it as these prasiolite glow. Prasiolite is generally enhance by irradiation and is from Brazil.