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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.
BIS hallmark is a system of hallmarking gold and silver jewellery in India, certifying their purity and quality. It consists of the BIS logo, the purity of metal, a six-digit alphanumeric HUID and the assaying centre mark.
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.
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Christofle is a Paris-based company founded in 1830 by Charles Christofle, who introduced electrolytic gilding and silver plating in France. It has supplied royal and imperial courts, and collaborated with renowned artists and designers such as Jean Cocteau, Man Ray, and Andrée Putman.
Learn about the different types of silver hallmarks used in various countries, such as the lion passant, the harp crowned, and the head of Minerva. Find out how to identify the purity, date, maker, and origin of silver objects from the marks and symbols.
A comprehensive list of symbols and signs used in typography with Latin script, with Unicode names, aliases, and links to related articles. Find out the meaning, function, and usage of various symbols such as apostrophe, asterisk, at sign, caret, circumflex, etc.
A comprehensive list of most types of jewellery made, organized by body parts, functions, gemstones and components. Find out the names and meanings of various jewellery items, from hair ornaments to puzzle rings.