Green Quartz Diamond Necklace

The piece

The Green Quartz also known as �Prasiolite� is a very special Quartz because it comes from a rather colourless quartz or a rather pale amethyst that has been heated twice to become green. \r\n\r\nWhen an amethyst - the purple variety of quartz - is slightly heated, it enhances the color, but when the temperature is higher, the amethyst becomes yellow that is: the amethyst becomes a citrine.\r\nCitrines can be found in their �natural� form, because of a natural heating (without any human interference) as the quartz crystal grows. But there are more and more citrines that comes from (hea