None. Fools Gold is iron pyrite, which is not measured in carats, because it is essentially worthless.
22 carats
24
21.6
Pure gold is 24 karat.
583 is Russian gold. 583 probe is 14K
Pure gold is 24 carats.
Carats is used especially for gold (as an equivalent of gold percentage).
I believe it is 900 Gold which makes it 21.6 carat.
24 karat
It depends on how pure the gold is. 24 karat gold wieghs .2 grams per carat weight so 5 carats is equal to 1 gram of pure 100% 24 karat gold.
All British gold Sovereign coinage minted since 1817 are at 22 carats or 91.67% fineness.