9 karat (37.5%)  $16.34 per gram    17 karat (70.8%)      $30.84 per gram

10 karat (41.7%)  $18.17 per gram    18 karat (75.0%)    $32.67 per gram 

11 karat (45.8%)  $19.95 per gram    19 karat (79.2%)     $34.50 per gram

12 karat (50.0%)   $21.78 per gram    20 karat (83.3%)      $36.29 per gram

13 karat (54.2%)  $23.61 per gram    21 karat (87.5%)     $38.12 per gram

14 karat (58.3%)   $25.40 per gram     22 karat (91.7%)     $39.95 per gram

15 karat (62.5%)   $27.23 per gram    23 karat (95.8%)     $41.73 per gram

16 karat (66.7%)   $29.06 per gram    24 karat (99.9%)     $43.56 per gram