The blazon of the coat of arms of the Princess of Asturias is given by a Royal Decree 979 on 30 October 2015 which was an amendment of the Royal Decree 1511 dated Madrid 21 January 1977, which also created her guidon (military personal ensign) and her standard. Official blazon The shield is divided into four quarters, blazoned as follows: 1st, Gules a castle three-towered Or, masoned Sable ajoure, (door and windows) Azure, for Castile; 2nd, Argent a lion rampant Purpure, armed Gules and crowned Or, for León; 3rd, Or four pallets Gules, for Aragon; 4th, Gules a cross, saltire and orle of chains all linked Or, an emerald Proper, for Navarre; Enté en point, Argent a pomegranate Proper seeded Gules, supported, sculpted and leafed in two leaves Vert, for Granada; Inescutcheon, Azure with three fleurs-de-lys Or, bordured Gules, for Bourbon. The whole is differenced by a label of three points Azure, the difference used by heirs apparent to the Spanish House of Habsburg. The shield is surmounted by a closed crown, which is a circle of gold, inset with precious stones of their colours, composed of eight rosettes of acanthus leaves, of which five are visible, interspersed by pearls in their colour, issuing from which are four pearl diadems, of which three are visible, which converge in a blue orb, with gold semi-meridian and equator, surmounted by a gold cross, the crown lined with red and surrounded by the collar of the Golden Fleece. History {| width="100%" cellpadding="0" cellspacing="0" border="0" border="1" cellpadding="4" cellspacing="0" style="margin: 0.5em 1em 0.5em 0; background: #f9f9f9; border: 1px #aaa solid; border-collapse: collapse;" |- | {| width = "100%" border = 1 border="1" cellpadding="4" cellspacing="0" style="margin: 0.5em 1em 0.5em 0; background: #f9f9f9; border: 1px #aaa solid; border-collapse: collapse;" |- |colspan = "3" bgcolor = "#ccccff" align="center"| Historical Arms of Princes and Princesses of Asturias |- !width = "35%"|Arms !width = "20%"|Dates !width = "45%"|Details |- | ||1388–1468||The arms used in the 13th and 14th century by the Prince of Asturias, and the others heirs apparent to the Castilian Throne before the title was adopted, were the undifferenced Royal Arms. However, the Infantes used differenced arms. |- ||| 1468–1474|| Princess Isabella (Isabella I as Queen of Castile) used the undifferenced Castilian Royal Arms and added the [[Eagle (heraldry)#Eagle of Saint John|Saint John the Evangelists Eagle]], an eagle "displayed" as single supporter. In 1473 the Princess Isabella's seal