Tanzanite stones are graded using the Tanzanite Quality Scale, an internationally recognized system that accurately describes a stone’s color and quality. This aids in assuring you of the worth and authenticity of your Tanzanite. Similar to diamonds, Tanzanite is graded according to the 4 C’s: Color, Clarity, Cut and Carat weight. The higher the combination of these Tanzanite properties, the rarer and more valuable the stone. Whether the gem is being offered to consumers at a traditional jewelry store counter, an internet shopping site or on a television broadcast, the journey always involves a great deal of effort. Countless hours of labor are required for a gem to reach customers from the mine.