24K Gold

24K gold happens to be very refined. It is sometimes referred to as being non-alloyed. It only contains gold and has no other metals mixed in, such as zinc, silver, palladium, copper, or nickel.
The purest gold form is 24K gold. However, it is also the softest. 24K gold bends and scratches easily. For this reason, it is not practical for everyday wear.

Difference 101