A 24 Karat gold is 100 per cent pure gold and does not have any other metal mixed. In the local market, it is known as 99.9 per cent pure and has a distinct bright yellow color. The 24 karat gold is more expensive than 22 or 18 Karat gold. It is soft and pliable and that's why not used in making regular forms of jewellery.

24k is the purest one