A tanzanite valuation establishes the stone’s identity, the intensity and hue of its blue-violet colour — a principal value factor — and possible heat treatment. These factors support the market valuation. An HRD Antwerp accredited gemmologist performs the examination.
Tanzanite is a rare gemstone mined in a single region of the world and admired for its blue-violet colour. Colour intensity is a principal factor in its value.
What we examine
- The stone’s identity — natural tanzanite or an imitation;
- Colour quality and intensity;
- Clarity, cut and carat weight.