Garnet (name) given name for American girls. It was in occasional use for boys in the United States between 1882 and 1925. It was most popular in 1904, when it was 593rd most popular name for American boys. The name has not appeared among the top 1,000 names for boys or girls since 1944 in the United States. 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
Garnet of the three minerals defines a pressure-temperature range in which the mineral could equilibrate with olivine plus pyroxene: the three are listed in order of increasing pressure for stability of the peridotite mineral assemblage. Hence, garnet peridotite must have been formed at great depth in the earth. Xenoliths of garnet peridotite have been carried up from depths of and greater by kimberlite, and garnets from such disaggegated xenoliths are used as a kimberlite indicator minerals in diamond prospecting. At depths of about and greater, a pyroxene component is dissolved in garnet, by the substitution of (Mg,Fe) plus Si for 2Al