“Single crystal of blue-violet tanzanite with minor white matrix on one side. The crystal exterior is complete and undamaged. Internally flawed, but with transparent sections near the tip. This crystal is NOT heat treated (most are to exaggerate color). Ex. R. Lambert collection RL46. Overall size of mineral specimen: 43x13x12 mm. Size of individual crystals: 43 mm.”
John Betts - 30th November 2000