Sapphire, St Edward's Sapphire, and the Black Prince's Ruby (a spinel). On the Sovereign's Sceptre with Cross is Cullinan I, the largest clear cut diamond in the world. Wives of kings are crowned as Queen Consort with a plainer set of regalia. The Crown of Queen Elizabeth The Queen Mother houses the 105-carat Koh-i-Noor diamond. In addition to crowns there are also various orbs, swords, coronets, rings and other pieces of regalia. Scotland The Honours, or 'crown jewels', including the Stone of Scone, are kept in Edinburgh Castle. They are the oldest surviving crown jewels in the United Kingdom. The crown dates from at least 1540 and the sceptre and the sword were gifts by Pope Alexander VI and Pope Julius II respectively to the King of Scotland in the 15th and 16th centuries. They were hidden during the Interregnum. The Honours of Scotland were almost forgotten following their last use at the coronation of Charles II in 1651 until they were discovered in a chest inside Edinburgh Castle in the early 19th century. A 'golden royal crown' pre-dating the existing 'Honours' had been in existence. It is recorded that it was seized by the English authorities following a search of the luggage of the deposed John Balliol as he attempted to leave England and make his way to exile in France following his release from imprisonment in London in 1299. This crown was sent to King Edward I in London where it was probably placed with the English crown jewels at Westminster Abbey. The later fate of this crown is not entirely clear, but it may have been returned to Scotland during the negotiations between Robert I of Scotland and Edward II of England (following the English defeat at Bannockburn in 1314) or perhaps was returned to Scotland for use in the coronation of Edward Balliol when he was installed as king of Scots by England in 1332. Nevertheless, it is not in existence today. Wales The original regalia of the Welsh princes have been lost. Llywelyn's coronet was kept after its capture with the English crown jewels between 1284 and 1649. Vatican The regalia of the papacy are kept in the Vatican City. For further Information, see Papal regalia and insignia. The triregnum is a headgear with three crowns or levels, also called the triple tiara or triple crown. "Tiara" is the name of the headdress, even in