The 24-karat gold is the most pure form of the gold and it is 99.9% purely gold. It have the original colour and shine of gold and it looks more eye catchy. It is of little brownish shade and there is no yellowish colour in the pure form. The higher the amount of impurity or say alloy is added to the gold with any method the yellowish colour of the gold increases. For example 14- karat gold is more yellowish as compare to 18- karat gold.

The classification with this karat measurement also gives option to people to have their desired shade of gold as well as margin in prices. The people who cannot afford such high prices of pure near gold can have the desire fulfilled with 14-karat or lesser gold jewelry. Moreover that low karat gold does not look that cheap and it is also of a class which is comparatively lower to higher karat gold but not that cheap to hate.

There are standards of gold market which made it labeled to make the standard karat gold jewelry. The jewelry nowadays has a symbol of "k" with a number. Like 22 karat jewelry have written 22k behind its back.

Different karats of gold is demanded in different parts of world for example in Arabic countries 24, 22, 21 karat gold jewelry is more popular. In Europe 8-18 karat jewelry is mostly used and in South Asian countries 22 karat is most popular.