Karats and fineness
Gold purity is given in karats (K) out of 24, or as fineness in parts per thousand.
- 24K = 999: the purest gold sold, used for coins and bars.
- 22K = 916: the usual standard for Indian jewellery.
- 18K = 750 and 14K = 585: harder alloys that hold stones well.
- The price follows the gold content, so 22K costs 22/24 of the 24K rate.