Video How To Test Silver

Silver is the first metal which was first smelted from ore. It comes from ancient Egyptian empire used and has been forged in household utensils, jewelry, etc. Pure silver is smooth as gold, copper usually alloyed to straighten his strength and can be used for making the production equipment and other items.

Without addition of alloying because of its softness, it would melt. Fine silver is pure Nearly 999/1000 percent, but it is too smooth to make jewelry, out of it a metal added in silver. But something called silver or sterling silver (which in it 92.5 percent pure silver and has 7.5 percent metal ) is pure silver.

Silver is a versatile chemical element. Sterling silver is 92.5 percent silver and 7.5 percent other metals, especially copper. It is harder than pure silver. Pure silver is smooth and often referred to as “fine silver.” Products can often be mistaken as silver when silver (only covered with a thin layer of fine silver). 

But how do you know you really have silver at home? Unless you are an silver holder, who knows quality is silver, and how pure the silver, you buy. You can not have the first clue how to test for silver purity at house. This article will Aid explain the purity of silver and how to confirm that not only is another gray metal.

The most obvious way to know pure silver, and the extent to which it is pure, is to check on your silver jewelry and silverware

Tips to determine purity of silver Or How to test silver

1. Test with a magnet , In the specially using a strong magnet, such as the magnet made of neodymium. Silver is paramagnetic and shows only a weak magnetic effect. If magnet very strong sticking on metal, it has a ferromagnetic core and is not silver. 

Note that there are a few other metals which a magnet will not stick and can be made to look visible as a silver. It is better to carry out the magnetic test in conjunction with another test to ensure that the core is not another metal.

2. Try the ring-test with each coin. Silver makes a really lovely bell like ringing when someone knocked on, especially if they are knocked with a different kind of metal. If you want to try this, you have to find metals silver quarter which made before 1965 in United States, it is made of silver 90% silver US. 

Were during quarters later than 1964 are made of a copper-nickel alloy. The elder quarter will give a whistle, clear ringtone, while the newer district give a thud of a sound. 

3. Perform a chemical analysis test to the point item. Use chemical analysis if no stamps indicating that the silver metal. Use gloves within silver test with chemicals, because if exposed to a corrosive acid solution, it will burn your skin

Note that this method has the potential to damaging silver element.

Buy a silver test. Silver acid tests for pure silver, but if you think your piece is silver, you will use a Little jeweler file to make a mark, revealing what might be under the plating.

Find. An inconspicuous place on the article in question and make a Little scratch on the silver piece. This is necessary in order to test the underlying metal silver it with acid. Scratch the piece a metal file. Scratch off enough so you can get to the surface of any plating layer.

If you do not want your piece scratch, or potentially leave a mark from the acid, you can use a black stone slab. These are generally made with a silver testing kit available. Rub your silver on the surface of the black stone, so that it leaves a thick and relatively Large deposit on the stone. Goal for a line that one thick one-half inch.

Apply a drop of acid to the scratched surface only. When the acid touches any portion of the piece that is not scratched, it will affect the polished look of the piece. If you want to use a black stone, a drop of acid will add to the line that you created on your stone. 

5. Analyze. The analyze  surface on part scratched with the acid. You have to analyze the color, the acid appears as decreases in the piece.
Be sure to follow the instructions and color of your specific silver test. In common, the color scale is as follows:

Bright Red: Fine Silver
Darker Red: 925 Silver
Brown : 800 Silver
Green : 500 Silver
Yellow: Lead or Tin
Dark brown: Brass
Blue: Nickel

This video constitute How to test silver

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- How to metal gold testing

 

The South African Gold Market

The economy of South Africa depends largely on its mining industry. It  is mines  precious metals like  gold , copper, platinum, and diamonds. The South African gold market is 120 years old. It has seen a continuous cycle of ebbs, and falls in its economic history. Like many other countries, it depended upon the London bullion market to sell its gold to the global gold market. Individual  gold   mining  companies and brokers marketed  gold  through London.

Later, The Reserve bank of South Africa took over the control of the gold market of South Africa in the early twentieth century, after the First World War ended, and used The Bank of England as its selling agent to channel gold to the London bullion market.

Later in 1968, during the Vietnam conflict, the London gold market was closed for two weeks. When it reopened, the future of the global gold market had changed forever. It had lost a number of its potential clients. The three main Swiss banks formed a Zurich gold pool, and approached The South African Reserve Bank to channel its gold. Even today, Switzerland is known to handle most of the gold produced in South Africa in the global gold market.

South Africa has the second largest gold reserves in the world. In the beginning, it contributed as much as half the total gold produced in the world. However, over a period, its  gold  production slowed down, despite the low-cost of  gold   mining  in South Africa. With the  gold  rush in California, and later in Australia,  gold   mining  companies focussed their attention to the newly discovered mines.

Gold   mining  is anyway a difficult job, and in a country like South Africa, where the geological factors make it unbearable to work, the instability of the country further hampers the growth of  gold   mining  industry. The geothermal temperature is more than 50 degree Celsius.

It needs tons and tons of water to be pumped in to cool the inner temperature. Moreover, it requires massive amounts of dynamite, and Cyanide to blast the  mines , and extract  gold  from there. The refining process of course needs uninterrupted power supply.

So altogether, the cost of  mining  and  processing  raw  gold  is extravagant for the government. With its limited resources, and insufficient power supply, coupled with the civil wars, and political instability, it has failed to deliver a prospective gold market. Rand, the South African currency is constantly losing its value against other currencies. The  gold  market has not yet shown signs of recovery, but the government is initiating projects like thermal power stations to generate more electricity for the  gold   mines  to increase their production by 2010.

Related Article :

- History Of Gold Mining In South Africa
- Gold Mining Industry In South Africa