Silver is somewhat rare and expensive, although not as expensive as gold. Man learned to separatesilver from lead as early as 3000 B.C. Pure silver has a brilliant white metallic luster. It is alittle harder than gold and is very ductile and malleable. Pure silver has the highest electrical andthermal conductivity of all metals, and possesses the lowest contact resistance.
      Silver is stable in pure air and water, but tarnishes when exposed to ozone, hydrogen sulfide, or aircontaining sulfur. It occurs in ores including argentite, lead, lead-zinc, copper and gold. Silver isavailable in many forms including crystals, flakes, wire, foil, granule, needles, powder, tube, mesh,bars, rod, shot, and wool. Silver is most used in electronics industry, medical industry, andphotography industry, especially used in making jewelries, vessels and religion keepsakes.
      Silver jewelries are one of the most favorite ornament for national minorities, Buddhists, andIslamists as well as the first preferred gifts for newly born babies by us Chinese. Recently, under theDoctrine of Back to the Ancients widespread in Europe and America, people are brought back to thelimitless sweet memories of ancient civilization when wearing silver jewelries. So silver jewelries aremore and more popular worldwide.