Report ID:68699
Created by: 1
Gemstone variety: Tanzanite
Weight: 2.82
Color: 160 - medium violetish Blue; strong
Clarity: VVS, Eye clean 1
Cut quality: Excellent
Shape: Cushion
Measurements, mm.: 9.9 x 7.7 x 4.7
Specific gravity, g/cm3.: 3.10
Treatment: None
LW fluorescence: None
SW fluorescence: None
Origin (if known): Tanzania
Description and comments: Zoisite crystals undergo heat treatment to capture the purplish blue colour No positive microscopic evidence of any enhancements were found in this gemstone Faint areas of green were detected as further evidence that no heat was applied Untreated Zoisite demands a further premium to this valuation
Valuation date: 23 Aug 2025
Report Status: Public
Permanent web location: https://gemval.com/valuation/tanzanite/?id=68699