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BIS hallmark is a hallmarking system for gold and silver jewellery sold in India, certifying the purity of the metal. It consists of the BIS logo, the purity of gold or silver, and a unique identification number.
Hallmark is an official mark or series of marks struck on metal items to certify their purity and fineness. Learn about the origins, evolution and variations of hallmarking in different countries and regions, from ancient Byzantium to modern Europe.
Learn about the oldest assay office in the UK, founded in the 14th century and based at Goldsmiths' Hall in London. Find out how it provides hallmarking, testing, valuation and other services for the jewellery trade and enforcement authorities.
Gold-filled jewelry is composed of a solid layer of gold bonded to a base of either sterling silver or some base metal. The layer of gold constitutes at least 5% of the item's weight and is thicker than regular gold plating.
L.G. Balfour Company is a private company that produces class rings, championship rings, yearbooks, and other products for schools, sports, and fraternities. Founded in 1913 by Lloyd Garfield Balfour, the company has a history of quality, integrity, and service, and has faced antitrust charges and competition.
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