It is mean 18 parts by weight of pure gold i.e. 75% gold and 25% other cheaper matel
From its name of 18 carat gold you can tell, if it is truly 18 carat gold, that there is 18/24ths gold and 6/24ths of another metal, possibly copper or platinum. 18 carat gold is (18/24)x100= 75% gold.
different materials are mixed with the gold 18 carat is 75 percent gold
18 carat gold is 75% gold, mixed with some mix of silver and copper.
24 carat gold is pure gold. The purity of gold is measured as a ratio out of 24. For example; 18 carat gold is 18 parts of pure gold and 6 parts of other alloying metals such as silver, copper and any other metal depending on whether it is rose gold colour, white gold colour or yellow gold colour. So in 18 carat gold, 18/24 = 0.750 which is a number that also characterises 18 carat gold. The typical Swiss hallmark defining 18 carat gold was the figure of a woman's head Hope this answers your question.
This is the deal on gold: 12 carat = 50% 14 carat = 58.33% 18 carat = 75% 22 carat = 91.67% 23 carat = 95.83 ...
The numbers are probably an indication of the purity of the gold. Pure gold is 24 carat but 22 carat, 18 carat, 14 carat and 9 carat are all common.
18 carat gold
From its name of 18 carat gold you can tell, if it is truly 18 carat gold, that there is 18/24ths gold and 6/24ths of another metal, possibly copper or platinum. 18 carat gold is (18/24)x100= 75% gold.
18 carat gold
18 carat gold
different materials are mixed with the gold 18 carat is 75 percent gold
The carat (abbreviation ct or Kt) is a measure of the purity of gold Therefore 24-carat gold is fine (99.9% Au w/w), 18-carat gold is 75% gold, 12-carat gold is 50% gold, etc.
18 carat is better than 14 carat. 24 carat is pure gold. 18 out of 24 is 75% gold the rest is made up of silver.
18 carat gold is 75% gold, mixed with some mix of silver and copper.
no
it means it is 18 carat gold ring or 76% pure gold
.999 = 24 carat = 99.9% .916 = 22 carat = 91.6% .750 = 18 carat = 75% .585 = 14 carat = 58% .375 = 9 carat = 37.5% A gold item listed as .575 is 57.5% pure gold. Its worked out thus: 24 carat gold is pure gold.. Therefore .575 or 57.5% = 13.8 carat gold. Its real gold - not gold plated.