Could only find very late period things.
This is a 13th century brass ornament to ward off the evil eye. Known as the Hand of Fatima or hamsa.
A gold openwork roundel, with tourmaline in the centre, surrounded by green beryl, yellow quartz and red rubies. 1&7/8in. (4.9cm.) diam. Sold by Christies for £3,000.
A late 17th century belt buckle of silver gilt. 10½in. (26.8cm.) long. Sold by Christies for £46,850.
Taken from Christies.
If interested, here is an article about The Art of Jewelry in the Ottoman Court by the Turkish Cultural Foundation.