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Illustration of stepwise bronze casting by the lost-wax method. Lost-wax casting – also called investment casting, precision casting, or cire perdue (French: [siʁ pɛʁdy]; borrowed from French) [1] – is the process by which a duplicate sculpture (often a metal, such as silver, gold, brass, or bronze) is cast from an original sculpture.
The history of glass-making dates back to at least 3,600 years ago in Mesopotamia. However, most writers claim that they may have been producing copies of glass objects from Egypt. [1] Other archaeological evidence suggests that the first true glass was made in coastal north Syria, Mesopotamia or Egypt. [2]
Candle moulding machine in Indonesia circa 1920. Candle making was developed independently in a number of countries around the world. [1]Candles were primarily made from tallow and beeswax in Europe from the Roman period until the modern era, when spermaceti (from sperm whales) was used in the 18th and 19th centuries, [2] and purified animal fats and paraffin wax since the 19th century. [1]
The main commissions for gold work and jewelry came from the Court or the Church. [18] As such, much of the jewelry was very religious, involving ornate crosses and depictions of the afterlife or of saints' lives. [19] The Byzantines excelled in inlaying and their work was enormously opulent, involving precious stones, glass and gold. [20]
Robert Augustus Chesebrough (/ ˈ tʃ iː z b r oʊ /; [1] January 9, 1837 – September 8, 1933) was an American chemist who discovered petroleum jelly—which he marketed as Vaseline—and founder of the Chesebrough Manufacturing Company.
Schliemann found the gold funeral mask in 1876, in a shaft tomb designated Grave V, at the site Grave Circle A, Mycenae. [2] [3] A total of eight men were discovered in Grave Circle A, [3] [4] all of whom had weapons in their graves, [5] but only five had masks; those were in Grave IV and Grave V. [2] [4]
French ormolu mantel clock (around 1800) by Julien Béliard (1758 – died after 1806), Paris.The clock case by Claude Galle (1758–1815) Ormolu (/ ˈ ɔːr m ə ˌ l uː /; from French or moulu ' ground/pounded gold ') is the gilding technique of applying finely ground, high-carat gold–mercury amalgam to an object of bronze, and objects finished in this way.
The Jewel viewed from the front, with the top in shadow. The Alfred Jewel is a piece of Anglo-Saxon goldsmithing work made of enamel and quartz enclosed in gold. It was discovered in 1693, in North Petherton, Somerset, England and is now one of the most popular exhibits at the Ashmolean Museum in Oxford.