For thousands of years, gold has been a precious metal to civilizations around the world. In more recent times, it has also been established as the basis of currency with most modern cultures. Therefore, this shiny metal is of significant value to all who own it. But, how exactly is the value of gold determined and what is the difference between the different types of karats? If you plan on buying or selling gold, it is important for you to know a few basics about how it is appraised. That way, you can be certain to get the best deal and to complete a transaction that is truly beneficial to you.

The weight of gold is measured in the same way as the weight is measured for other precious metals. Depending upon who is doing the measuring, it may be weighed by troy ounces or by grams. When it comes to matters of economic concern, the value of one troy once is of great concern, as the value of the United States dollar is determined by the value of one troy ounce.

For many years, for example, one troy once of gold was valued at $20.67. This changed in 1934, however, when the value of one troy ounce jumped to $35. Since then, the value has undergone some changes and continues to fluctuate, though it still remains a highly valuable commodity.

Another factor used to determine the value of items made with gold is its purity.  Since gold is such as soft metal, it is often allowed with other metals in order to make it harder or to change the overall appearance of the item.  In order to identify the purity of the gold, it is assigned a karat rating.  Pure gold, for example, is referred to as being 24 karat gold.  As the purity decreases, so does the karat number.  When it comes to gold bars, on the other hand, the purity is measured by its millesimal fineness.  This scale ranges from 0 to 1, with a higher number indicating a higher purity level.

Once the weight and purity is determined, the value of the gold is primarily determined by the open market. Through a process known as Gold Fixing, a daily benchmark figure valuing gold is first reported in London. Afternoon fixing then takes place when the markets open in the United States. These benchmarks are set during daily meetings, which take place twice per day and include representatives from five different gold-trading firms. The current value of gold is also determined throughout the day by determining the intra-day spot price, which is a price that is based on the value given to the metal within gold-trading markets around the world.

Although valuing gold can be a somewhat complicated process, those who are simply looking to get rid of unwanted gold objects don't have to worry about trying to keep up with the market trends. Rather, businesses such as Cash4Gold make it easier. With Cash4Gold, you simply send in your gold items with the insured envelope the company provides and then wait for your cash to arrive!