Tanzanite Grading | Jack Friedman Jewellers

Tanzanite Grading

Our guide to tanzanite quality & value

Tanzanite Grading Expertise


  • IF = Internally Flawless @ 6x magnification
  • C = Clean ( Eye clean)
  • S = Slight Inclusion
  • I = Included


  • E = Excellent
  • VG = Very good
  • G = Good
  • F = Fair

Tanzanite is classified as a blue gemstone, with varying degrees of violet influencing the over all colour.

-b denotes that the colour is predominantly blue and -v denotes that the colour is predominantly violet. (+) after grading denotes half grading.

Did you know?

Tanzanite is considered to be a thousand times more rare than Diamonds and it’s formation is so rare that it has been described as being ‘more astounding than the stone itself’.

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