4c.co.za

In a a similar way to diamonds. the Tanzanite Foundation grades tanzanite according to the 4 C's: Color, Clarity, Cut and Carat Weight. The higher the combination of these characteristics, the rarer and more valuable the stone. Understand and check all 4 C's before purchasing your tanzanite.

Color

Color refers to color quality and its degree of saturation. The depth of color ranges from Exceptional to Pale, with a 'B' or 'V' indicationg a predominance of blue or violet hues.
The deeper the color, the more valuable the tanzanite.

Clarity

Clarity refers to any natural flaws and inclusions in a tanzanite. Tanzanite’s ranges from Eye Clean to Heavily Included.
The more flawless the tanzanite, the more valuable it is.

Cut

Cut refers to a tanzanite's brilliance, proportions and finish. An 'Excellent' cut ensures that the stone's facets reflect liught to create maximum brilliance.
The more precise the craftsman's cutting, the more vlauable the tanzanite.

Shapes

Carat

Carat Weight is the term used to measure a tanzanite’s weight. One carat has 100 points and weighs 1/5 of a gram.
Two seemingly identical tanzanites will have different Carat Weights if they vary in depth.

Confidence

The 5th C is Confidence and is only applicable to tanzanite which is accompanied by the Mark of Rarity™. The Mark of Rarity™ is the icon of the Tanzanite Foundation and is synonoymous with Confidence. It is assurance that your tanzanite has followed an ethical route to market.