Coronation Mantle of Roger II of Sicily
http://www.khanacademy.org/humanities/art-history/art-history-400-1300-medieval-era/v/coronation-mantle—new
This is a video about a gorgeous medieval treasure from 12th century:
The coronation mantle of Roger the 2nd of Sicily, it´s a well publicised piece kept in Vienna.
I don´t know if any of you know that today nobody on this planet is able to make a gold thread as fine as the one used on this piece. The people working with the finest material today are the Chinese and our club owns one board woven piece done by Heidi Stolte with some gold thread which she was provided by Chinese textile artists. This is the finest thread made today and not available on the open market, but it´s still not as thin as the thread used on this mantle and nobody knows any more how they managed to produce this quality - 800 years ago!
Another quite interesting point is that the coronation mantle of the emperor of the holy roman empire during the time of the crusades had kufic (arabic) inscriptions around the bottom and therefore was clearly made by the arabic craftsmen living in Sicily at the time.
Here´s another site with details about the embroidery:
http://medieval.webcon.net.au/extant_roger_ii.html