Tanzanite is unique among gemstones, but like diamonds and other precious gems, it is graded by means of a standard grading system. This grading system is vital in determining the value of each individual tanzanite, but it is also important for a consumer’s peace of mind. Each tanzanite jewellery creation is accompanied by a Certificate of Authenticity, which lists the stone’s characteristics together with an Ethical Compliance Certificate confirming that the Tanzanite was mined in an ethical manner. In additional, tanzanite jewellery over 1ct and loose tanzanite stones also larger than 1ct are accompanied by an Ayanda Tanzanite certificate.
Tanzanite is graded according to the 4 Cs: Colour, Cut, Clarity and Carat weight. The higher the combination of these 4 Cs, the more rare and valuable a tanzanite is. There is also a fifth C, which stands for Confidence that comes with the certification that guarantees colour, clarity and exceptional quality. When purchasing tanzanite, it is absolutely essential to understand its grading, and to ask to see its certificate of authentication before making the purchase.