86	TOPAZ
	In biblical times topaz was a very highly prized gem, and in Revelations is mentioned as forming one of the gates of the Holy City. It is also related that the King of Tyre wore a topaz. However, the gems spoken of under this name were probably chrysolite, while what the ancients termed chrysolite would now be known as topaz. A charming legend is told of a topaz supposed to be presented by Lady Hildegarde, wife of Theodoric of Holland, to a monastery in her native town. It is said to have emitted at night a light so brilliant that prayers could be read in the chapel, where it was kept, without the aid of a light.