Refers to colour quality and its degree of saturation. The depth of colour ranges from exceptional to pale, with `B´or `V´ indicating predominance of blue or violet hues.

Clarity refers to any natural inclusion in a tanzanite. Tanzanite properties ranges from Internally Fluorescent to Heavily Included.

Cut refers to the tanzanite´s angles and proportions. An excellent cut means that the stone reflects light to create maximum brilliance

Carat is the term used to measure a tanzanite´s weight. One carat has 100 points and weighs 1/5 of a gram.