it is the purest form of gold you can get on the market. it is not entirely pure gold, because if it was you could knead it. it always has some copper to maintain its hardness
It gold in the purest form, near 100% gold. This also makes it much more malleable
24k gold is pure gold but is too soft to be used for much. So it is usually alloyed with copper and silver to make it harder.
1200
At least 99.9%