The cenotaph sarcophagus of Bayezit I is covered with velvet, embroidered in silver thread. This piece dates from the 18th or early 19th century, and is a fine example of old ‘goldwork’, generally called ‘Maraş işi’ (work from Maraş, southeastern Turkey).

Goldwork is always surface embroidery; the vast majority is a form of laid work or couching; that is, the gold/silver/metal threads are held on to the surface of the fabric by a second thread, usually of fine silk. The ends of the thread, depending on type, are simply cut off, or are pulled through to the back of the embroidery and carefully secured with the couching thread.

Correspondent: J.M.Criel, Antwerpen.
Sources: ‘Giyim Süsleme Teknikleri’ (Orta Dereceli Kız Teknik Öğretim Okulları, 1984)
& Wikipedia.