Provided it is yellow, put it in nitric acid. If not huing the acid, that is pure gold in contact with the acid
Your question makes no sense the "caret" designation tell you how pure the gold is not how much there is.24 caret is pure gold.
The carats tell how pure the gold is. Pure gold is 24 carat. The fraction of 24 carats that the carat count is would be the fraction of gold in a piece of jewelry. For example, 18 karat gold is 75% gold and 12 karat is 50% gold.
Pure gold is 24 karats. This means it is 99.9% pure gold.
Pure gold is typically measured in karats, with 24 karats representing 100% pure gold. So, in pure gold, there are 24 karats.
karats is the amount of pure in gold
Density can tell you how "pure" a substance is. Since each substance has a specific density in its "pure" state, having no other substances in its composition, by measuring it density you can tell how pure the mineral or substance is, 99.9% pure gold.
When you buy gold jewelry, look for the karat quality mark. The karat mark should tell you how much pure gold is in the piece. Pure gold – 24 karat (24K) gold – is soft, so it's often mixed with other metals to increase its hardness and durability.
Gold
To check if your gold is pure, you need to compare its weight to the weight of a known sample of pure gold. If the two weights are equal, then you can be confident that your gold is pure.
pure gold has 0 karats, but 24 karat gold is the purest gold you can buy, as it is 24 parts gold
16 KT would not be considered pure gold as it would still have additives or alloys like copper mixed in with it. Pure gold would be 24KT which is 99.9 % pure.
No, thaere is no such thing as pure gold.