In front of the Presiding Officers' desk is the parliamentary mace, which is made from silver and inlaid with gold panned from Scottish rivers and inscribed with the words: Wisdom, Compassion, Justice and Integrity. The words There shall be a Scottish Parliament, which are the first words of the Scotland Act, are inscribed around the head of the mace, which has a formal ceremonial role in the meetings of Parliament, reinforcing the authority of the Parliament in its ability to make laws. Presented to the Scottish Parliament by the Queen upon its official opening in July 1999, the mace is displayed in a glass case suspended from the lid. At the beginning of each sitting in the chamber, the lid of the case is rotated so that the mace is above the glass, to symbolise that a full meeting of the Parliament is taking place.