It can weight about 30 grams - 50 grams.
1 pound
8
There are many factors influencing the value of an 18ct gold ring. The biggest one is the weight of the gold, it is impossible to put a price on a ring without the gold weight of the ring.
It's about 42% gold, by weight.
Depends on the weight and workmanship of the ring.
475 could be the amount by weight (in thousandths) of gold in the ring. This would be about 13 carat gold.
18 karat gold
Weigh the ring. If it is 24 carat gold then the ring is pure gold and all of the weight is gold If it is 22 carat gold then the ring is 22/24 gold and the weight of gold will be reduced by 1/12 Any other degree of pureness can be calculated similarly.... 18 carat gold is 75% gold, 12 carat is 50% gold and so on.
Their average weight is 2.2 kilograms (4.9 lb).
It could be any weight. 14k gold means 14 karat gold and tells you the amount of pure gold in the ring (58%). It tells you nothing about how heavy the ring is. (24k gold is 100% pure, and is softer than 14k gold.)
10k 512 means, you have a 10k gold ring with 5.12carat's total gem weight.
To get an guestimate price you would need to know the weight of the ring. 18K gold is 75% gold not 100%. So you would need the weight, and calculate 75% of the current spot price corresponding to the weight. So say its a 10 gram ring. Find out the price of gold per gram, multiply it by 10. Then do the math 75% of what your gold gram price .. .
Any weight, of anything, you should measure by weight scale. While karat designation tells you only how many parts of gold, karats, are in the total of 24 parts. 10 karat gold ring has 10 parts of gold and 14 parts of other metals inside. But it does not say anything about the weight.