While tourmaline comes in many colors, when iron is present during its formation a greenish to blueish color is produced. Genuine Green Tourmaline varies from subtle to brilliant depending on its quality.
Green Tourmaline is usually facetted and has a hardness rating of 7 to 7.5 out of 10. This makes it a suitable option for daily wear, in most situations, when set as your class ring centerpiece.
