Assuming that your carats refer to diamonds, a diamond is valued by its cut, clarity, carat weight and colour. A local jeweler can look at your diamonds and give you a precise answer.
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916kdm gold is 24 carat 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.
Its value is determined by the worth of the gold it contains.
An 18 carat gold krugerand would be worth around $290,000-$310,000
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The price for a one carat diamond cluster will vary greatly depending on things such as the quality and size of the diamonds in the cluster. The type of ring setting is also a factor in price such as 10, 14, 18 or 24 carat gold. An example is a 10k white gold diamond cluster is $600 at Zales but a 14 carat diamond cluster on the Ross Simons site sells for $2,471.
To convert 24 carat gold to 23 carat gold, you will need to add an alloy to reduce the purity of the gold. Typically, silver is used as the alloy to decrease the carat value. The amount of silver added will depend on the desired carat value and the weight of the gold being converted.
22 carat gold=4.4g (As 1 Carat gold=0.2g).
"chr" on a gold bracelet likely stands for "carat," a unit of measurement used to indicate the purity of gold. Pure gold is 24 carats, but gold jewelry is often made with a lower carat value to increase durability. For example, 18-carat gold is 75% gold and 25% other metals. The carat value is typically stamped on gold jewelry to indicate its purity level.
The value of any coin would depend on the year and condition of the coin. At the very least, a 22 carat gold sovereign would be worth its weight in the current bullion value of gold.
As of August 4, 2014 one gram of 8 karat gold is worth 13.80. The prices and value for gold change often and are dictated by the economy and demand.
US nickels have never been struck in gold. Your coin is plated so it has no added value.
It depends on the carat that it is but I can tell you that 11g of 9 carat gold would be about £133
The value of a diamond depends on its cut, its clarity, its colour and its carat weight. A local jeweler can give you the answer you want.
The value would depend on the number of diamonds to make up the total 0.50ct and the quality as regards colour, clarity, etc. Assume 12-14 full-cut diamonds to make up the 0.50 carat weight with very good colour and clarity.