3.03.2008

ABOUT SILVER

READ IT FIRST BEFORE YOU BUY MY PRODUCT
As a precious metal
A major use of silver is as a precious metal and it has long been used for making high-value objects reflecting the wealth and status of the owner. Jewellery and silverware are traditionally made from sterling silver (standard silver), an alloy of 92.5% silver with 7.5% copper. Sterling silver is harder than pure silver and has a lower melting point (893 °C) than either pure silver or pure copper. Britannia silver is an alternative hallmark-quality standard containing 95.8% silver, often used to make silver tableware and wrought plate. With the addition of germanium, the patented modified alloy Argentium Sterling Silver is formed, with improved properties including resistance to firescale.
Silver is used in medals, denoting second place. Some high-end musical instruments are made from sterling silver, such as the flute.


READ IT FIRST BEFORE YOU BUY MY PRODUCT

Silver (pronounced /ˈsɪlvɚ/) is a chemical element with the symbol "Ag" (Latin: argentum, from the Ancient Greek: ἀργήντος - argēntos, gen. of ἀργήεις - argēeis, "white, shining" ) and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal. It occurs as a free metal (native silver) as well as in various minerals, such as argentite and chlorargyrite.Most silver is produced as a by-product of copper, gold, lead, and zinc mining.

Silver has been known since antiquity, and it is used as a currency metal. It has long been valued as a precious metal used in ornaments and jewellery and in high-value tableware and utensils (hence the term "silverware"). Today, it is used in photographic film, electrical contacts and conductors, and mirrors. Elemental silver is also used to catalyze chemical reactions. Silver is antimicrobial, and dilute solutions of silver nitrate and other silver compounds are used as disinfectants. Although silver has largely been supplanted by other treatments, the antiseptic properties of silver are still a useful tool in the prevention and treatment of sepsis and infections caused by antibiotic-resistant microorganisms such as MRSA.

Silver is a very ductile and malleable (slightly harder than gold) monovalent coinage metal with a brilliant white metallic luster that can take a high degree of polish. It has the highest electrical conductivity of all metals, even higher than copper, but its greater cost and tarnishability have prevented it from being widely used in place of copper for electrical purposes, though it was used in the electromagnets used for enriching uranium during World War II (mainly because of the wartime shortage of copper). Another notable exception is in high-end audio cables, although the actual benefits of its use in this application are questionable.
AS A PRECIOUS METAL
A major use of silver is as a precious metal and it has long been used for making high-value objects reflecting the wealth and status of the owner. Jewellery and silverware are traditionally made from sterling silver (standard silver), an alloy of 92.5% silver with 7.5% copper. Sterling silver is harder than pure silver and has a lower melting point (893 °C) than either pure silver or pure copper. Britannia silver is an alternative hallmark-quality standard containing 95.8% silver, often used to make silver tableware and wrought plate. With the addition of germanium, the patented modified alloy Argentium Sterling Silver is formed, with improved properties including resistance to firescale.

Silver is used in medals, denoting second place. Some high-end musical instruments are made from sterling silver, such as the flute.
PRICE
Silver is currently about 1/50th the price of gold by mass and approximately 70 times more valuable than copper. Silver once traded at 1/6th to 1/12th the price of gold, prior to the Age of Discovery and the discovery of great silver deposits in the Americas, most notably the vast Comstock Lode in Virginia City, Nevada, USA. This then resulted in the debate over cheap Free Silver to benefit the agricultural sector, which was among the most prolonged and difficult in that country's history and dominated public discourse during the latter decades of the nineteenth century.

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2 komentar:

Anonim mengatakan...

Good basic info on silver. Thanks for posting the info.

Mellisa Kasopa mengatakan...

thx for reading my article,,nice day..