This beautiful Mongolian Turquoise comes in some absolutely stunning shades. Whether you will be shaping it into a lovely cabachon, using it in an art piece or keeping it as a raw specimen it will be perfect for your next project. This material has undergone the Zachery Process which is a proprietary treatment that improves the properties of turquoise without changing its chemical makeup. This is the only turquoise process that is recignized by GIA as a natural treatment, this process improves the stones ablitily to take a polish.