Gold is originally of yellow colour but the gold is available in many different colours and they are mainly obtain by alloying the gold with some different metals. Black gold is also an alloy of pure gold. There can be many different methods through which black gold can be created. Among them some of the methods are described as below: The controlled oxidation of gold is processed which contains carat gold and the amorphous carbon with cobalt and/or chromium. The process is called chemical vapor deposition and it is assisted by Plasma. One another process to make black gold alloy includes the process of patination which is formed when we apply sulfur and oxygen containing compounds directly with carat gold.

The gold and diamond are among the most expensive treasures of the world. They are commonly used in jewelry sets and other parts of jewelry. Both gold and diamond are demanded highly in world. The pricing of both gold and diamonds are pretty higher in all times and they are increasing rapidly. The pricing of both gold and diamonds differs on various factors. Some of those factors are described as under. The pricing of gold depends on the demand of the gold. The higher the demands of gold the higher will be the prices. In addition to demand, economy of the place is also observed and considered in pricing. The prices are therefore adjusted calculating the measurement in karats and sell accordingly. The gold do not have more factors to be observe to price it.

Gold is the metal that has fascinated all with its tremendously wonderful glow of sunshine and aura. The gold is among those materials of trade which depends on their demand totally. When it is demanded at a good peak the prices jumps to a higher amount and when the demand is quiet low the prices come down back to a lower one.The prices in current situation are about at peak and before a month or few it reached to top recorded one. The highest price recorded presently was about a thousand and twenty-four dollars per ounce of gold. But certainly those prices did not keep maintain for long time and quickly falls down to a few dollars in one day.

Gold is an element and chemists call it "Aurum", with its chemical name. Since very early times, the gold is considered and seen as the most precious thing on Earth. This metal exists in rocks usually in mountains and old soil deposits. Looking at it, it gives a shiny, softer and malleable look and is ductile. Pure and clean gold is yellowish in color and has a great luster and shine. The important thing about this element, that it persist its luster property in air and water, whereas other elements usually do not. It is said that up to now, total gold which has been dug out and purified is about the size of a cube of 20 meters of each side. The most widely used industry consuming gold is the jewelry and ornamentation.

Every metal has its own importance and characteristic. Similar are the Gold and Silver, but they have a lot of application in thousand of different fields. Gold and Silver are very well-known metals. These metals are considered as the leaders of jewelry. But, an important thing about these metals is that they are very expensive and require a high degree of precision in designing and shaping, since both are malleable and ductile and can be drawn in to wire and shapes. Both metals have different features and characteristics. But, it is understood, that these two metals have much more different properties than other ordinary metals. In this article, we'll discuss the different, feature and properties of these two metals, namely, gold and silver.

Gold comes in that category of market which is always in demand from a very long time. The price of gold from past few decades is increased to a great extent that it can be understandable by one example, the difference between the prices of 1990s and in 2009 is more than twenty times. This is only a period which is about two decades and such a increase is so profitable for the traders and investors of gold. Gold trading not only include the trading of gold by itself but the metals which enlist with gold like silver, platinum, palladium are also involved in its trading. These all are also trade beside gold and named "gold trading".

As we all know, gold is the most expensive, most precious, hardest known metal yet on Earth. It has many types as 14k gold is known as white or yellow gold. Platinum is another metal but it is also a precious metal and used in jewelry. Silver is third among the list used for decorating and ornamenting purposes. Its malleability and ductile property allow it to draw in desired shape and give it fine looks for different requirements. Then, it is used for earring, rings, bands, gold biscuits, and so on. Gold ore which is extracted from deposits and mountains is not very pure and requires several steps and techniques to make it finished and gold with high luster.

Gold is known and used since very earlier times. The first metal used for ornamentation and decoration was gold. Gold is also considered as the most precious metal on earth, though the metals of Platinum group can have much higher prices. Gold is also considered a symbol of purity and royalty showing clarity and cleanness. Its importance and significance can be thought by considering that it was a enormous goal of alchemists to make gold from other substances such as lead, etc. Some mythical substances were thought to be needed in order to achieve this goal but, this could never happen. From the very early times, gold is also set as a standard and was use to back the paper money, since it is considered as very stable.

Gold is a widely used metal available on Earth and also the one used in the most expensive and most precious purposes. Gold ores are extracted for deposits and mountains and pure gold is made. The purest 24k gold is rarely found in deposits. Being the most expensive, it has also a number of applications and uses in different fields of world. In this article, we'll discuss some of the applications of gold. First of all, and obviously the most decorative is the lady's jewelry, which has an immense importance in a woman's life. Gold is used widely for ornamentation and jewelry purposes.

The karat or carat is a measure to check the purity of an alloy. The spelling Karat is used in America and Canada for the measure of purity of gold and Carat is used in gemstones. Whereas Carat is used for the purity checking of allow in Europe and other parts of the world. In gold, the karats are measured on a scale which consists from one karat to twenty-four (24) karat. The alloys are added to the gold to give it firmness, strength and durability. Such that if eighteen (18) parts of gold is mixed with six (6) parts of an alloy creates 18-Karat gold and fourteen (14) parts of gold with ten (10) parts make 14-Karat gold or twenty-two (22) parts of gold mixed with only two (2) parts make the 22-Karat gold.