3704127 Decorative element, 9th-10th century (carved rock cystal) by Islamic School (9th-10th century); 7.6 high cm; Metropolitan Museum of Art, New York, USA; (add.info.: This carved crystal element may have contained perfume. Rock crystal carving, an art requiring great skill and manual dexterity, reached its peak during the Fatimid period, when large quantities of the raw material were imported to Cairo from the East African coast.); out of copyright.