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TABLES FOR ESTIMATING THE WEIGHT OF ROUND BRILLIANT CUT DIAMONDS
  
Round Brilliant Cut
  
Diameter (mm)
1.0
1.2
1.3.
1.5
Carat Weight
0.005
0.0075
0.01
0.015
Diameter (mm)
1.7
1.8
2.0
2.2
Carat Weight
0.02
0.025
0.03
0.04
Diameter (mm)
2.3
2.5
2.8
3.0
Carat Weight
0.05
0.06
0.08
0.10
Diameter (mm)
3.4
3.6
3.8
4.0
Carat Weight
0.15
0.17
0.20
0.23
             
4.1mm - 5.0mm
  
5.1mm - 6.0mm
  
6.1mm - 7.0mm
  
7.1mm - 8.0mm
Diameter 4.1mm
Depth (mm)
2.2
2.3
2.4
2.5
2.6
Carat Weight
0.23
0.24
0.25
0.26
0.27
 
Diameter 5.1mm
Depth (mm)
2.8
2.9
3.0
3.1
3.2
Carat Weight
0.44
0.46
0.48
0.49
0.51
 
Diameter 6.1mm
Depth (mm)
3.5
3.6
3.7
3.8
3.9
Carat Weight
0.79
0.82
0.84
0.86
0.89
 
Diameter 7.1mm
Depth (mm)
4.0
4.2
4.4
4.6
4.8
Carat Weight
1.23
1.29
1.35
1.41
1.48
             
Diameter 4.2mm
Depth (mm)
2.3
2.4
2.5
2.6
2.7
Carat Weight
0.25
0.26
0.27
0.28
0.29
 
Diameter 5.2mm
Depth (mm)
2.9
3.0
3.1
3.2
3.3
Carat Weight
0.48
0.49
0.51
0.53
0.54
 
Diameter 6.2mm
Depth (mm)
3.6
3.7
3.8
3.9
4.0
Carat Weight
0.84
0.87
0.89
0.91
0.94
 
Diameter 7.2mm
Depth (mm)
4.0
4.2
4.4
4.6
4.8
Carat Weight
1.26
1.33
1.39
1.45
1.52
             
Diameter 4.3mm
Depth (mm)
2.4
2.5
2.6
2.7
2.8
Carat Weight
0.27
0.28
0.29
0.30
0.32
 
Diameter 5.3mm
Depth (mm)
3.0
3.1
3.2
3.3
3.4
Carat Weight
0.51
0.53
0.55
0.57
0.58
 
Diameter 6.3mm
Depth (mm)
3.7
3.8
3.9
4.0
4.1
Carat Weight
0.90
0.92
0.94
0.97
0.99
 
Diameter 7.3mm
Depth (mm)
4.0
4.2
4.4
4.6
4.8
Carat Weight
1.30
1.37
1.43
1.50
1.56
             
Diameter 4.4mm
Depth (mm)
2.5
2.6
2.7
2.8
2.9
Carat Weight
0.30
0.31
0.32
0.33
0.34
 
Diameter 5.4mm
Depth (mm)
3.0
3.1
3.2
3.3
3.4
Carat Weight
0.53
0.55
0.57
0.59
0.60
 
Diameter 6.4mm
Depth (mm)
3.8
3.9
4.0
4.1
4.2
Carat Weight
0.95
0.97
1.00
1.02
1.05
 
Diameter 7.4mm
Depth (mm)
4.1
4.3
4.5
4.7
4.9
Carat Weight
1.37
1.44
1.50
1.57
1.64
             
Diameter 4.5mm
Depth (mm)
2.5
2.6
2.7
2.8
2.9
Carat Weight
0.31
0.32
0.33
0.35
0.36
 
Diameter 5.5mm
Depth (mm)
3.1
3.2
3.3
3.4
3.5
Carat Weight
0.57
0.59
0.61
0.63
0.65
 
Diameter 6.5mm
Depth (mm)
3.9
4.0
4.1
4.2
4.3
Carat Weight
1.01
1.03
1.06
1.08
1.11
 
Diameter 7.5mm
Depth (mm)
4.1
4.3
4.5
4.7
4.9
Carat Weight
1.41
1.48
1.54
1.61
1.68
             
Diameter 4.6mm
Depth (mm)
2.6
2.7
2.8
2.9
3.0
Carat Weight
0.34
0.35
0.36
0.37
0.39
 
Diameter 5.6mm
Depth (mm)
3.1
3.2
3.3
3.4
3.5
Carat Weight
0.59
0.61
0.63
0.65
0.67
 
Diameter 6.6mm
Depth (mm)
3.9
4.0
4.1
4.2
4.3
Carat Weight
1.04
1.06
1.09
1.12
1.14
 
Diameter 7.6mm
Depth (mm)
4.1
4.3
4.5
4.7
4.9
Carat Weight
1.44
1.52
1.59
1.66
1.73
             
Diameter 4.7mm
Depth (mm)
2.6
2.7
2.8
2.9
3.0
Carat Weight
0.35
0.36
0.38
0.39
0.40
 
Diameter 5.7mm
Depth (mm)
3.2
3.3
3.4
3.5
3.6
Carat Weight
0.63
0.65
0.67
0.69
0.71
 
Diameter 6.7mm
Depth (mm)
4.0
4.1
4.2
4.3
4.4
Carat Weight
1.10
1.12
1.15
1.18
1.20
 
Diameter 7.7mm
Depth (mm)
4.2
4.4
4.6
4.8
5.0
Carat Weight
1.52
1.59
1.66
1.74
1.81
             
Diameter 4.8mm
Depth (mm)
2.7
2.8
2.9
3.0
3.1
Carat Weight
0.38
0.39
0.41
0.42
0.44
 
Diameter 5.8mm
Depth (mm)
3.3
3.4
3.5
3.6
3.7
Carat Weight
0.68
0.70
0.72
0.74
0.76
 
Diameter 6.8mm
Depth (mm)
4.0
4.1
4.2
4.3
4.4
Carat Weight
1.13
1.16
1.18
1.21
1.24
 
Diameter 7.8mm
Depth (mm)
4.2
4.4
4.6
4.8
5.0
Carat Weight
1.56
1.63
1.71
1.78
1.86
             
Diameter 4.9mm
Depth (mm)
2.7
2.8
2.9
3.0
3.1
Carat Weight
0.40
0.41
0.42
0.44
0.45
 
Diameter 5.9mm
Depth (mm)
3.3
3.4
3.5
3.6
3.7
Carat Weight
0.70
0.72
0.74
0.76
0.79
 
Diameter 6.9mm
Depth (mm)
4.1
4.2
4.3
4.4
4.5
Carat Weight
1.19
1.22
1.25
1.28
1.31
 
Diameter 7.9mm
Depth (mm)
4.2
4.4
4.6
4.8
5.0
Carat Weight
1.60
1.68
1.75
1.83
1.90
             
Diameter 5.0mm
Depth (mm)
2.8
2.9
3.0
3.1
3.2
Carat Weight
0.43
0.44
0.46
0.47
0.49
 
Diameter 6.0mm
Depth (mm)
3.4
3.5
3.6
3.7
3.8
Carat Weight
0.75
0.77
0.79
0.81
0.83
 
Diameter 7.0mm
Depth (mm)
4.1
4.2
4.3
4.4
4.5
Carat Weight
1.23
1.26
1.29
1.32
1.35
 
Diameter 8.0mm
Depth (mm)
4.3
4.5
4.7
4.9
5.1
Carat Weight
1.68
1.76
1.83
1.91
1.99
       
 
   
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