Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. Topaz crystallizes in the orthorhombic system, and its crystals are mostly prismatic terminated by pyramidal and other faces. == Color and varieties == Pure topaz is colorless and transparent but is usually tinted by impurities; typical topaz is wine, yellow, pale gray, reddish-orange, or blue brown. It can also be made white, pale green, blue, gold, pink (rare), reddish-yellow or opaque to transparent/translucent. Orange topaz, also known as precious topaz, is the traditional November birthstone, the...

Waterford Crystal is a manufacturer of crystal. It is named after the city of Waterford, Ireland. Waterford Crystal is owned by WWRD Holdings Ltd, a luxury goods group which also owns and operates the Wedgwood and Royal Doulton brands. In January 2009 its Waterford base was closed down due to the bankruptcy of the Wedgwood Group. After several difficulties and takeovers, it re-emerged later that year. In June 2010, Waterford Crystal relocated almost back to its original roots, on The Mall in Waterford City. This new location is now home to a manufacturing facility that melts over 750 tonnes of...