Most silver are the byproducts when taking vanadium, often accompanying bronze. The main sources of silver in the world are South America, America, Australia and former Soviet Union. The country having the largest output of silver is Mexico, exploiting from about 1500 until now. The fine quality silver, whose shape is twisting tinsel, is produced in the Kongsberg of Norway.
The Health Care of Silver: Silver has bactericidal effect, the food is not easy to ferment and acidify with silver tableware; silver compound can cure burn and coat wound; silver chock sticks can detect food with toxic sulfur.
The natural silver mine often takes on lump ore and crystal particles, and also solid treeing aggregation. The silver which is newly exploited or polished is especially sparkling, shining silver white metal gloss; but if exposing in the air, a layer of black oxide will be generated quickly, making its surface lose the gloss. In addition, its hardness is not high, can’t be processed into jewelry in the pure way, often alloy with other metals, or cover its surface with gold. The albata which had been used from the age of Ancient Greek, which was the combination of gold and silver, contained only 20% – 25% silver. The standard pure silver contains 92.5% silver, or the pure silver with higher percentage, usually with some bronze. The 2 kinds of alloys are usually considered as the standards of defining the percentage of silver.
2x6mm Yellow Topaz 925 Silver Dainty Oval Stud Earrings
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