Tanzanite (Zoisite) Gemstones

Violet-Blue Tanzanite is the result of heat-treatment, as the following photo illustrates:

Tanzanite
Tanzanite

TNZ190
TNZ190
0.40 ct. total, 'A' Grade
2.8mm Round Cut
Light
Moderately Strong Violetish Blue
Very Slightly Included
[H] Heated to improve color.
Only one pair available.
Tanzanite

TNZ192
TNZ192
0.24 ct. total, 'A' Grade
3.0mm Round Cut
Light
Strong Bluish Violet
Loupe Clean
[H] Heated to improve color.
Only one pair available.
Tanzanite

TNZ195
TNZ195
0.33 ct., 'A' Grade
4.0mm Round Cut
Light
Strong Bluish Violet
Loupe Clean
[H] Heated to improve color.
Quantity Available: 2
Tanzanite

TNZ111
TNZ111
4.11 ct.
14.0x7.9mm Pear Cut
Medium Dark
Strong Bluish Violet
Flawless
[E] Routinely enhanced.
One of a kind.
Tanzanite

TNZ181
TNZ181
1.80 ct.
9.0x6.7mm Pear Cut
Medium
Vivid Violet
Loupe Clean
[E] Routinely enhanced.
One of a kind.
With Greenish Yellow.
Bi-Color

TNZ106
TNZ106
0.39 ct.
6.9x3.0mm Marquise Cut
Medium
Strong Violetish Blue
Slightly Included
[E] Routinely enhanced.
One of a kind.
Tanzanite

Calibrated Tanzanite
Calibrated Tanzanite

Specify size, shape and quality when ordering. Prices are subject to change without notice. Actual carat weight may vary from the average carat weight listed.

Tanzanite Quality AAA AA A B
Shape Size Avg. Weight Price Each
1.75mm
0.03 ct. 
2mm
0.04 ct. 
2.25mm
0.06 ct. 
2.5mm
0.08 ct. 
2.75mm
0.10 ct. 
3mm
0.12 ct. 
3.5mm
0.19 ct. 
4mm
0.27 ct.
4.5mm
0.42 ct.  
5mm
0.55 ct.  
5.5mm
0.70 ct.  
6mm
0.88 ct.  
6.5mm
1.15 ct.  
7mm
1.40 ct.    
 
  AAA AA A B
4x3mm
0.20 ct.
5x3mm
0.25 ct.
5x4mm
0.37 ct.  
6x4mm
0.50 ct.
7x5mm
0.85 ct.
8x6mm
1.35 ct.  
 
  AAA AA A B
4x3mm
0.16 ct.   
5x3mm
0.23 ct.   
6x4mm
0.45 ct. 
7x5mm
0.72 ct.   
8x5mm
0.85 ct.    
8x6mm
~    
9x6mm
~    
10x7mm
~    
 
  AAA AA A B
4x2mm
0.09 ct.  
5x2.5mm
0.15 ct.  
6x3mm
0.25 ct.  
7x3.5mm
0.38 ct.  
8x4mm
0.60 ct.  
9x4.5mm
0.85 ct.  
10x5mm
1.15 ct.   
 
  AAA AA A B
4x3mm
0.20 ct.
5x3mm
0.27 ct.
6x4mm
0.60 ct.  
6.5x4.5mm
0.75 ct.   
7x5mm
1.00 ct.  
8x6mm
1.70 ct.  
 
  AAA AA A B
1.75mm
0.03 ct.    
2mm
0.06 ct.    
2.25mm
0.07 ct.   
2.75mm
0.12 ct.    
5.5mm
0.85 ct.    
 
  AAA AA A B
3mm
0.10 ct.   
3.5mm
0.16 ct. 
4mm
0.23 ct.
4.5mm
0.31 ct.
5mm
0.45 ct.
5.5mm
0.55 ct.  
6mm
0.75 ct.  
6.5mm
0.88 ct.  
 
  AAA AA A B
4x2mm
0.13 ct. 
5x2mm
0.17 ct.    
6x3mm
0.40 ct.    
7x3.5mm
0.55 ct.    
 
  AAA AA A B
2mm
0.06 ct. 
2.25mm
0.07 ct. 
2.5mm
0.09 ct. 
2.75mm
0.11 ct. 
3mm
0.15 ct. 
3.5mm
0.24 ct. 
4mm
0.35 ct.  
4.5mm
0.45 ct.  
5mm
0.58 ct.  
5.5mm
0.85 ct.  
6mm
1.10 ct.   
 
  AAA AA A B
4mm
~    
6mm
~    
8mm
~    
10mm
~    

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