Garnet (name) Garnet (name) Garnet is a name of Middle English origin, derived from the dark red gemstone, which was in turn named for the pomegranate that the garnet crystals resemble. The surname Garnett comes from an Old English occupational surname referring to a seller of hinges. It is both a surname and a given name. The name came into occasional use along with other gem names during the late Victorian era. Garnet was among the top 1,000 names for girls in the United States between 1884 and 1944. It was most popular in 1911, when it was the 376th most popular
Garnet rocks in which they grew. Garnet grains that lack compositional zonation commonly are interpreted as having been homogenized by diffusion, and the inferred homogenization also has implications for the temperature-time history of the host rock. Garnets are also useful in defining metamorphic facies of rocks. For instance, eclogite can be defined as a rock of basalt composition, but mainly consisting of garnet and omphacite. Pyrope-rich garnet is restricted to relatively high-pressure metamorphic rocks, such as those in the lower crust and in the Earth's mantle. Peridotite may contain plagioclase, or aluminium-rich spinel, or pyrope-rich garnet, and the presence of each