The result of a side effect when using a Scroll of Dilution, that occurs from time to time due to calculation error made by the mage who created the scroll. Gleaming and playing in all colors of the rainbow, the Marvelous Glass is very attractive. Small wonder a use for it was found quickly. After the governments on both continents have prohibited gambling for interest, the Marvelous Glass has become a worthy substitute for money in hazardous games, which are played in the taverns Mary's tavern and The Gurraldiy's Head Pub.
If you have collected 100 such glass pieces, you may exchange them for Hunters of Fortune reputation at the gamblers in the taverns.