The standards of fineness are defined by: Karat (K) which represents 1/24 part of pure gold or Numerical mark Which represents the number of parts by weight of pure gold expressed in parts per thousand.
| NUMERICAL VALUE REPRESENTATION | KARAT VALUE REPRESENTATION |
|---|---|
| 999 | 24K |
| 916.6 | 22K |
| 916 | – |
| 850 | – |
| 750 | 18K |