and was probably produced either in Hungary or Naples, probably between 1370 and 1382. The House Altar of Jasper was made by Ottavio Miseroni in Prague, probably around 1620. The Reliquary with a Nail from the Cross was made in Augsburg in the mid-17th century. The Feather Picture of the Virgin Mary was made by the Purépecha Indian artist Juan Baptiste Cuiris in Michoacán (Pátzcuaro), Mexico, around 1550-1580. It is a picture of the Virgin Mary, made completely out of sparkling Hummingbird and parrot feathers. The Mexican Indian artists from Amentaca were famous for their traditional skills in producing art out of feathers. There are all in all seven feather-pictures in the treasury, making it the largest collection of such specific items. It belonged to the collection of Emperor Rudolf II. The Ainkhürn (horn of a unicorn) was originally thought to be the horn of a unicorn and was considered more valuable than gold, since magical healing powers were ascribed to it. The hilt of a sword was made from it, as well as a tankard. In reality, the horn probably came from a Narwhal. The Agate Bowl () is a bowl whose inscriptions are said to refer to Jesus Christ. It was at one time regarded as the Holy Grail. See also Crown Jewels Austria-Hungary House of Habsburg Holy Crown of Hungary Florentine Diamond Wittelsbach Diamond References Citations Bibliography External links Kunsthistorisches Museum Austrian monarchy Crown jewels National symbols of Austria National symbols of Austria-Hungary Imperial Treasury, Vienna