Amalgams

alloy of mercury with another metal

material used in dentistry for direct restorative procedures in the tooth

alloy of mercury and sodium

thumb|French ormolu mantel clock (around 1800) by Julien Béliard (1758 – died after 1806), Paris. The clock case by Claude Galle (1758–1815) Ormolu (; ) 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 mercury is driven off in a kiln, leaving behind a gold coating. The French refer to this technique as ; in English, it is known as gilt bronze. Around 1830, legislation in France outlawed the use of mercury for health reasons, though use continued to the 1900s.

Arquerite is a naturally occurring alloy of silver with mercury. It is a very rare mineral, consisting of a silver-rich variety of amalgam, containing about 87% silver and 13% mercury. Arquerite has been reported from only four localities worldwide, two in Chile and two in British Columbia, Canada. Other names for arquerite include argental mercury, mercurian silver, and silver amalgam.