Love star Sterling Silver Star of David H-34 | Sterling Silver Star of David H-52 |
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Sterling Silver Star of David H-53 | Sterling Silver Star of David H-54 |
Sterling Silver Star of David H-59 | Sterling Silver Star of David H-60 |
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Sterling Silver Star of David H-61 | Sterling Silver Star of David H-67 |
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Sterling Silver Star of David H-68 | Sterling Silver Star of David H-72 |
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Sterling Silver | Sterling Silver |
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Sterling Silver Star of David H-86 | Sterling Silver Star of David H-88 |
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Shalom Sterling Silver Star of David H-89 | Sterling Silver Mezuzah Pendant H-94 |
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Sterling Silver Star of David H-95 | Sterling Silver Star of David H-96 |
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Sterling Silver Star of David H-97 | Sterling Silver Star of David H-98 |
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Commandments Sterling Silver Star of David H-102 | Sterling Silver Star of David H-103 |
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Sterling Silver Mezuzah Pendant H-105 | Sterling Silver Mezuzah Pendant H-106 |
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Sterling Silver Mezuzah Pendant H-107 | Sterling Silver Mezuzah Pendant H-108 |
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Sterling Silver Mezuzah Pendant H-109 | Sterling Silver Star of David H-110 |
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Sterling Silver | Sterling Silver |
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Thursday, January 18, 2007
Sterling Silver Jewish Jewelry - Made in Israel
Friday, December 29, 2006
Best Deals found at:
Aharon's Jewish Books and Judaica |
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Wednesday, March 1, 2006
Origin of the term Sterling Silver
Origin of the term The term "Sterling Silver", in reference to the .925 grade of silver, emerged in England by the 13th century. The first mention is that of "sterilensis" in 1078, and by the thirteenth century (by the 1200's) the term sterling had appeared. "sterling" comes from the Old French esterlin and then stiere (strong, firm, immovable) in Old English. Jewelry History: [Read More] It seems quite possible that Sterling Silver may have been known first as "Easterling Silver". The term "Easterling Silver" was used to refer to the grade of silver that had originally been used as the local currency in an area of Germany, known as "The Easterling". King Henry II set about to adopt the alloy as the standard for English currency. He imported metal refiners from the Easterling and put them to work making silver coins for England. The silver these refiners produced came into usage as currency by 1158 in the form of what are now known as "Tealby Pennies", and was eventually adopted as a standard alloy throughout England. The original term of "Easterling Silver" was later abbreviated to "Sterling Silver". Though the coin weights and silver purity changed considerably in the intervening time (reaching a low point before the reign of Elizabeth I, who reinstated Sterling Silver coinage for the first time since the early 14th century), the pound sterling was used as currency in England from the 12th century until the middle of the 20th century. Specifically this was in the silver coins of the British Empire -- Britain, British colonies and some former British colonies. This sterling coin silver is not to be confused with the Coin silver standard. Mint Mark Theory Another credible theory is that, since mint marks on Sterling Silver pennies have included a star and a starling, this may be the origin of the word -- as a simple corruption of, for example, "starling silver" with common reference to the circulating coin A sterling silver object that is to be sold commercially is, in many countries, taken to an Assay office for testing of the purity of the metal. The item is then marked, usually via hammer and punch, with the Hallmark of that particular nation. Because this process leaves sharp edges and spurs of metal, it is generally done before the item is sent for its final wheel polishing. [read more] Fine silver is 99.9% silver or better. This grade of silver is used to make bullion bars for international commodities trading. In the modern world Fine Silver is understood to be too soft for general use. As the purity of the silver increases, the problem of corrosion or tarnish lessens. There are a number of methods for removing tarnish from sterling silver. The benefits and drawbacks of each will be discussed below. | ||||||||||||
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article Sterling Silver. |
Sunday, June 5, 2005
Silver
silver, metallic chemical element; symbol Ag [Lat. argentum]; at. no. 47; at. wt. 107.8682; m.p. 961.93°C; b.p. 2,212°C; sp. gr. 10.5 at 20°C; valence +1 or +2. Pure silver is nearly white, lustrous, soft, very ductile, malleable, and an excellent conductor of heat and electricity. In many of its properties it resembles copper and gold, the elements above and below it in group Ib of the periodic table. It is not a chemically active metal, being considerably below hydrogen in the electromotive series (see metal). It is, however, attacked by nitric acid (forming the nitrate) and by hot concentrated sulfuric acid. Silver is almost always monovalent in its compounds, but an oxide, a fluoride, and a sulfide of divalent silver are known.
It does not oxidize in air but reacts with the hydrogen sulfide present in the air, forming silver sulfide (tarnish). Silver nitrate is the most important compound. Silver chloride, bromide, and iodide are used in still photography because of their sensitivity to light. Solutions of certain protein complexes containing silver are used as antiseptics.
A mirror can be made by coating glass with metallic silver derived from the reaction of a solution of a silver ammonia complex with an organic reducing agent such as formaldehyde. Although silver can be found uncombined in nature, most silver used today is obtained from its ores. Among these the most important are argentite or silver glance (silver sulfide), which is found associated with other metal sulfides, e.g., galena; horn silver or cerargyrite (silver chloride); two ores composed of silver and antimony (in different proportions) called pyrargyrite (or ruby silver ore) and stephanite; and another ore composed of silver and arsenic sulfides called proustite. Mexico, the United States (Idaho, Montana, Arizona, Colorado, Utah, Nevada, California, New Mexico, and Texas), the former USSR, Peru, Australia, and Canada are the leading producers. The metal is prepared in various ways depending upon the nature of its occurrence; the greatest quantity is obtained in connection with the refining of lead and copper. It is separated from lead by the Parkes process, which is based upon the fact that silver is soluble in molten zinc whereas lead is not. The cyanide process has largely replaced an amalgam process in which silver is dissolved in mercury. Some of the silver produced today is used, as in the past, in making coins (see coin; money; bimetallism). Large quantities are used for silver utensils and jewelry, and in plating tableware electrolytically from a solution of sodium silver cyanide. Alloys of silver with copper, in which the copper adds hardness, are important. Coin silver is an alloy consisting of 90% silver and 10% copper. Sterling silver contains 92.5% silver and 7.5% copper. Silver alloys are used in dental amalgams and for electrical contacts. Silver was one of the first metals to be used by humans (see silverwork).
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article Silver.