22K gold or 22 Karat gold is 91.7% pure (22/24). This is basically the highest gold rating available for purchase of jewelry or for industry purposes.

What is it used for
22 karat gold has similar uses as for 21 karat gold, but is genuinely more expensive. Certain models of jewelry are not made with 22 karat gold because of the high risk of damage.

Where it is popular
22 karat gold is mostly in demand for special occasions like weddings. It is considered to make the most valuable gold jewelry gifts.

Pros
22 karat gold is widely the purest form of gold anyone can own as jewelry, since 24 karat gold is usually reserved for financial and commodity trade purposes because of its delicate property.

Cons
The only downside is that much care must be taken when wearing 22 karat gold jewelry.