WEIGHT TO SIZE CONVERSION CHARTS

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ROUND   PEAR   MARQUISE   OVAL
carats mm   carats mm   carats mm   carat mm
.005 1.0   .09 3 x 2.5   .035 2.5 x 1.25   .20 4 x 3
.0067 1.15   .12 4 x 2.5   .04 3 x 1.5   .25 5 x 3
.0075 1.12   .14 4 x 3   .06 3.5 x 1.75   .38 5 x 4
.01 1.3   .16 4.5 x 3   .07 3.5 x 2   .50 6 x 4
.015 1.5   .20 5 x 3   .09 4 x 2   1 7 x 5
.02 1.7   .30 5.5 x 3.5   .11 4.25 x 2.25   1.25 7.5 x 5.5
.025 1.8   .50 6 x 4   .14 4.5 x 2.5   1.50 8 x 6
.03 2.0   .75 7 x 5   .15 5 x 2.5   2 8.5 x 6.5
.035 2.1   1 8 x 5   .20 5 x 3   2.50 9 x 7
.04 2.2   1.50 9 x 6   .25 6 x 3   3 10 x 8
.05 2.4   2 10 x 7   .30 6 x 3.5   3.50 10 x 8.5
.06 2.5   2.50 12 x 7   .38 7 x 3.5   4 11 x 9
.07 2.7   3 12 x 8   .50 8 x 4   4.50 11 x 9.5
.08 2.8   3.50 13 x 8   .75 9 x 4.5   5 12 x 10
.09 2.9   4 14 x 8   1 10 x 5      
.10 3.0   4.50 14.5 x 9   1.50 11 x 5.5      
.11 3.1   5 15 x 9   2 12 x 6      
.12 3.2         2.50 13 x 6.5      
.14 3.3         3 14 x 7      
.15 3.4         3.50 14 x 7.5      
.16 3.5         4 16 x 8      
.17 3.6         5 16 x 8.5      
.18 3.7                  
.20 3.8                  
.22 3.9   EMERALD   HEART   TRILLION
.23 4.0   carat mm   carat mm   carat mm
.25 4.1   .25 5 x 3   .12 3 x 3   .10 3 x 3 x 3
.30 4.2   .50 6 x 4   .20 3.5 x 3.5   .14 3.5 x 3.5 x 3.5
.33 4.4   .75 6.5 x 4.5   .25 4 x 4   .18 4 x 4 x 4
.38 4.6   1 7 x 5   .38 4.5 x 4.5   .25 4.5 x 4.5 x 4.5
.40 4.8   1.50 8 x 6   .50 5 x 5   .33 5 x 5 x 5
.47 5.0   2 8.5 x 6.5   .65 5.5 x 5.5   .40 5.5 x 5.5 x 5.5
.50 5.2   2.50 9 x 7   .75 6 x 6   .50 6 x 6 x 6
.60 5.4   3 10 x 8   1 6.5 x 6.5   1.50 7 x 7 x 7
.65 5.6   4 11 x 9   1.50 7 x 7   2 8 x 8 x 8
.75 5.8   5 12 x 10   2 8 x 8   2.50 9 x 9 x 9
.80 6.0         2.50 8.5 x 8.5   3 10 x 10 x 10
.95 6.4         3 9 x 9      
1 6.5         3.50 9.5 x 9.5      
1.10 6.6         4 10 x 10      
1.17 6.8         4.50 10.5 x 10.5      
1.25 7.0         5 11 x 11      
1.33 7.2                  
1.50 7.4                  
1.60 7.6  

PRINCESS

            
1.75 7.8   carat mm            
1.90 8.0   .03 1.5 x 1.5            
2 8.2   .04 1.75 x 1.75            
2.15 8.4   .06 2 x 2            
2.25 8.6   .10 2.5 x 2.5            
2.50 8.8   .14 2.75 x 2.75            
2.85 9.2   .17 3 x 3            
3 9.4   .20 3.25 x 3.25            
3.15 9.6   .23 3.5 x 3.5            
3.35 9.8   .30 3.75 x 3.75            
3.50 10.0   .38 4 x 4            
3.75 10.2                  
4 10.4                  
4.25 10.6                  
4.50 10.8                  
4.75 11.0                  
5 11.2                  
                     
ROUND  

ROUND

   ROUND
d.w. size (mm) c.z.w.   d.w. size (mm) c.z.w.   d.w. size (mm) c.z.w.
.01 1.25 .02   .07 2.75 .14   .28 4.25   .50
.02 1.50 .03   .10 3.00 .19   .35 4.50   .60
.025 1.75 .03   .13 3.25 .25   .45 5.00   .85
.03 2.00 .05   .16 3.50 .30   .50 5.25 1.00
.04 2.25 .07   .20 3.75 .35   .60 5.50 1.10
.05 2.50 .10   .25 4.00 .45   .68 5.75 1.25
                     
ROUND   ROUND   MARQUISE
d.w. size (mm) c.z.w.   d.w. size (mm) c.z.w.   d.w. size (mm) c.z.w.
.75 6.00 1.45   1.75   7.75 3.30   .25 6 x 3  .50
.90 6.25 1.60   2.00   8.00 3.50   .50 7 x 3.5  .75
1.00 6.50 1.80   2.25    8.50 4.00   .75 8 x 4 1.25
1.15 6.75 2.00   2.50   9.00 4.70   1.00 10 x 5 1.75
1.25 7.00 2.25   3.00   9.50 5.65   1.50 11 x 5.5 2.75
1.50 7.50 2.85   3.50 10.00 6.60   2.00 12 x 6 3.25
                     
PEAR   OVAL   EMERALD
d.w. size (mm) c.z.w.   d.w. size (mm) c.z.w.   d.w. size (mm) c.z.w.
  .25 5 x 3   .50   .25 5 x 3   .50   .50 6 x 4   .75
  .50 6 x 4   .75   .50 6 x 4   .75   .75 6.5 x 6.5 1.25
  .75 7 x 5 1.25   .75 7 x 5 1.25   1.00 7 x 5 1.75
1.00 8 x 5 1.75   1.00 7.5 x 7.5 1.75   1.50 8 x 6 2.75
1.50 9 x 6 2.75   2.00 9 x 7 3.25   2.50 9 x 7 5.25
2.00 10 x 7 3.25   3.00 10 x 8 5.25   3.00 10 x 3 6.50
                     
HEART   TRIANGLE   SQUARE
d.w. size (mm) c.z.w.   d.w. size (mm) c.z.w.   d.w. size (mm) c.z.w.
   .25 4 x 4    .50     .10 3.0 .20    .04 2 x 2  .07
   .50 5 x 5    .75     .14 3.5 .25    .10 2.5 x 2.5  .20
  .75 6 x 6 1.25     .18 4.0 .33    .17 3 x 3  .30
1.00 6.5 x 6.5 1.75     .25 4.5 .50    .23 3.5 x 3.5  .40
1.50 7 x 7 2.75     .33 5.0 .60    .40 4 x 4  .70
2.00 8 x 8 3.25     .40 5.5 .70    .50 5 x 5 1.00
          .50 6.0 1.00   1.00 6 x 6 2.00
        1.50 7.0 3.00   1.25 7 x 7 2.50

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