Is 24 karat pure gold?
107983
24k is a type of gold if u had a neckless it would not be as strong then say 10k 14k 18k
188961
Actually, contrary to what some people obviously believe, gold is really soft. If you can make a mark on it when you bite down, it is real.
224583
Are you sure the jewerly is 14k? This shouldn't happen,\nunless the metal underneath the gold is causing this to happen.
996090
Well, I don't know how to test for 9 kt gold, but I do know that 8 kt gold and 5 kt gold exist.  Unfortunately I don't know anything about the availability.  The word karat just refers to how pure the gold is.  For example 24 karat is 100% pure, and 18 karat is 75% pure and so on.  So of course it is possible to make 8 or 5 or 13 or 22 karat gold, but I don't think it's very common.  \n\nNow, if you know what other metal the gold is mixed with, and you know the specific gravity of the gold and the other metal, you could probably determine the karat of the gold by comparing that to the specific gravity of your sample and plugging it into the equations.
988522
If it's a number like .750 or .999 it means the percent of gold.  .999 is the highest number used because there's no way to get all of the impurities out to call it 100%\n\nIf it's a number with a k, that stands for karat weight.  24k is basically 100% gold.  18k is 18/24 so it's equal to 75% gold or .750 (see example above).
234986
A 14.5" cube of 24 karat gold will weigh 2000 pounds.  \n\nIt is so malleable that 1 ounce of gold can be spread into a continuous sheet large enough to cover a football field.\n\nGold has a specific gravity 19 times that of fresh water and twice that of lead.\n\nThe contact switches for automotive airbags are gold plated because of gold's resistance to corrosion.\n\nMore men became wealthy during the California gold rush catering to the needs of miners than became wealthy by mining.\n\nGold purity is measured in Karats (or Carats). The volume is divided by 24. 24 K gold is 24 of 24 parts pure gold. 14 K gold is 14 parts gold and 10 parts another metal (silver, nickel, copper, etc)
1108606
The same way that Archimedes did -- determine the density.\n\nMeasure the mass of the coin, then determine its volume by water displacement.\n\nDensity = mass/volume\n\nThe density of pure (24 karat) gold is 19.3 grams/cm3\n\nFor other alloys and karat ratings of gold, check this table:\nhttp://www.24carat.co.uk/densityofgoldandothermetalsframe.html\n\nMost U.S. gold coins in current production are 22 karat gold.\n\nYou may need to do some more research to determine the expected gold content of your coin, and then you can compare it to the chart for a density value.
277688
Ask a jewler I guess, they can turn gold into white gold
997623
yes. the current trophy is 100% 24 carat gold.\n\nthe first world cup,or jules rimet trophy was also solid gold,but only 18 carat!\n \n\nre answer from tony1903\n\nyou got all the sizes for the world cup correct,but that picture you saw has misled you.because of the problems with previous cup being stolen,they now always refer to it as 18carat when infact it,s def 24.\n\nin the picture the cup in greece is actually a bronze replica which is 18 carat gold plated!! on the day of that story i was in brazil and the cup was still in it,s secure display unit in the brazilian football associations head office.because of security,the actual trophy is only ever either in the hands of the holders or FIFA take it to the world cup,in this case germany,the trophy that goes on tour is not the real McCoy!\n\ntony 1903 is a bit easy to wind up,isn't he.\nyou bite too easy mate!!
679198
Gold is measured by purity, not weight.  Pure gold is 24 carat but would be too soft for jewellery usage.  The most common used in US is 14 carat - meaning 14 parts pure gold and 10 parts of another alloy or metal.  In UK wedding rings are usually 18 carat whilst middle range jewellery is 9 carat - 9 parts pure gold and 15 parts another alloy or metal.\n\nThis 'carat' is not to be confused with the carat used in diamonds........that is a different proposition altogether and denotes weight..............
1039864
If you can measure the weight and volume of the ring, you could find its density.  The value will be different depending on what purity it is (24k will be denser than 12k, for example).  Most gold in jewelry is not 24k, but some alloy with nickel, copper, etc. that makes it harder.  These alloys are also how you get white, pink, and green gold.\n\nBiting a ring will only give you marks if it is 24k gold.\n\ndensity would be the easiest way, I'd say.  (density = mass/volume)\nYou'll need the equipment to measure pretty small masses and volumes, though, which most people don't have in their kitchens.
4297
Gold is measured in ounces and as of 2:24 EST the price of gold is $503.40 per ounce.
687124
Assuming this is fine gold with a purity of 99.9% or better...\n\nThe current spot price of gold is: $718.40/Troy Ounce. (May 14, 2006)\n\n1 troy ounce = 31.1034768 grams\n\nSo, .8 grams = 0.02572059 troy ounces.\n0.02572059 * $718.40 = $18.48\n\nSo: $18.48, but not many people would buy such a small amount of gold unless you drop the price by about 10%, so your could probably sell it for: $16.63
15523
The higher the number the more gold, percentage wise\n\nGold is a precious metal that has been valued by people since ancient times. People use gold for coins, jewelry, ornaments, and many industrial purposes. Until recently, gold reserves formed the basis of world monetary systems. \n\nGold is a very soft metal when it is pure (24 Kt. is pure gold). Gold is the most malleable (hammerable) and ductile (able to be made into wire) metal. Gold is usually alloyed (mixed with other metals, often silver and copper) to make it less expensive and harder. The scientific abbreviation of gold is Au. \n\nThe purity of gold jewelry is measured in karats. Some countries hallmark gold with a three-digit number that indicates the parts per thousand of gold. In this system, "750" means 750/1000 gold (equal to 18K); "500" means 500/1000 gold (equal to 12K).\n\nTherefore 14K is better.
602913
No. White gold is an alloy of gold and silver. Therefore is less expensive than gold since it has a small percent of silver in it.\n(But be careful because some people refer to platinum as white gold. Platinum is far more expensive than gold)
1121611
First off...look for any stampings on the jewellery, these numbers and or letters will determine karat or silver.  If there is no stamp the piece is likely plated or gold filled.  Precious metals (except silver) will not fade or tarnish.  By your explanation....it sounds like your jewellery is plated.  If you see another metal under the surface it is plated.  If the metal is discolouring but you see no under laying metal, it is likely gold filled.  Platinum is an extremely dense metal (heavy), malleable and presents a grey/white tone.  There are other colors of gold besides white and yelow,  if you see green or rose color these peices are likey gold.
519372
According to the CRC handbook of chemistry and physics the boiling point of pure gold is 2856 celcius.