Pure gold is 24 carat (100%)
80% gold is 19,2 carat
Pure gold is 24 carat so 22 carat is 92% pure.
different materials are mixed with the gold 18 carat is 75 percent gold
18 carat is 75 percent pure gold. 24 carat gold is .9999 percent pure. so the value of the gold would 75 percent or 3/4 of the total weight of the wedding band
100
87 percent pure gold
19 carat is about 78% gold
1 carat gold is about 4 percent real gold at this point it is mostly other metals such as copper and tin just plated with gold
18 carat
22 carat gold is 91.66 percent pure gold. Since 100% pure is impossible 24 carat, at 99.999% pure is considered as 'pure'. 18 carat, which most jewelry is made of is about 75% pure gold. A carat is a 24th so 22 carat gold is 22/24ths gold, and 2/24ths of another metal, most likely copper or silver.
This is just the jewellers mark, it doesn't have any affect on the value of the gold. The numbers which have meaning and affect the value are: - 333 (8 carat / 33.3% gold content) - 375 (9 carat / 3.75% gold content) - 417 (10 carat / 4.17% gold content) - 585 (14 carat / 5.85% gold content) - 620 (14.8 carat / 62% gold content) - 750 (18 carat / 75% gold content) - 800 (19.2 carat / 80% gold content) - 875 (21 carat / 87.5% gold content) - 915 (22 carat / 91.5% gold content) - 990 (24 carat / 99% gold content) - 999 (24 carat / 99.9% gold content) The most common gold content used in modern jewellery is 3.75% (9 carat).
24 carat gold is from 90% to 99.9% gold.
24 carat gold is 100 % gold; 23 carat gold is 95,833 % gold.