Garnet as gemstones. The gemstone varieties occur in shades of green, red, yellow, and orange. In the US it is known as the birthstone for January. It is the state mineral of Connecticut, New York's gemstone, and star garnet (garnet with rutile asterisms) is the state gemstone of Idaho. Garnet sand is a good abrasive, and a common replacement for silica sand in sand blasting. Alluvial garnet grains which are rounder are more suitable for such blasting treatments. Mixed with very high pressure water, garnet is used to cut steel and other materials in water jets. For water jet cutting, garnet
Thomas Garnet Thomas Garnet Saint Thomas Garnet (c.1575 – 23 June 1608) was a Jesuit priest who was executed in London. He is the protomartyr (i.e., the first martyr associated with a place) of Saint Omer and therefore of Stonyhurst College. He was executed at Tyburn and is one of the Forty Martyrs of England and Wales. Thomas Garnet was born into a prominent family in Southwark. His uncle, Henry Garnet, was the superior of the Jesuits in England. Richard Garnet, Thomas's father, was at Balliol College, Oxford, at the time when great severity began to be used against Catholics. His example