2006-08-30 11:00:59 · 6 answers · asked by Princess 1 in Society & Culture ➔ Community Service
Gold is measured in karats (with a "k" - carats with a "c" is for measuring precious stones and = 0.2 g).
It is a measure of the amount of gold parts in a piece of gold an the basis of 24.
In other words 1 karat = 1/24 th gold by weight.
So,
10 karats = 10/24 gold by weight or approx. 40% (41.6%)
12 karats = 1/2 gold by weight or 50%
14 karats = 14/24 gold by weight or approx. 60% (58.3%)
18 karats = 18/24 gold by weight or 75%
22 karats = 22/24 gold by weight or approx. 92% (91.6%)
24 karats = 24/24 gold or pure gold.
Depending on the other metals used and their density, the volume of gold can vary. For instance, since gold is twice as dense (has double the specific gravity) of silver, 12 karat gold made silver is 33% by volume, but 50% by weight. Similarly a gold/silver alloy of 18 karat is 50% by volume, but 75% by weight.
When other metals such as copper, which is less dense than silver are added to the alloy, then the volume of gold (in relation to the whole) is reduced but not the weight.
Also, gold that is mixed with a predominance of silver takes on the colour that is referred to as green gold, and when mixed with a predominance of copper it is red gold.
2006-08-30 11:23:44 · answer #1 · answered by Sincere Questioner 4 · 0⤊ 0⤋
10 KARAT IS LOWER GRADE OF GOLD....14 IS MOST WIDELY USED FOR QUALITY JEWELERY.....18 KT IS MORE GOLD BUT IS SORT OF ORANGEY AND MORE SOFT.
2006-08-30 18:04:59 · answer #2 · answered by flowerspirit2000 6 · 1⤊ 0⤋
It is hard to find a place to put specific questions, try education, under trivia maybe.
2006-08-30 18:03:43 · answer #3 · answered by Sue Chef 6 · 1⤊ 0⤋
Um, what? And how is this community service?
2006-08-30 18:02:17 · answer #4 · answered by Phoenix, Wise Guru 7 · 1⤊ 0⤋
I don't understand your question.
2006-08-30 18:02:29 · answer #5 · answered by sweets 6 · 1⤊ 0⤋
STC, just what are you asking ?
2006-08-30 18:04:20 · answer #6 · answered by no nickname 6 · 1⤊ 0⤋