roof topped off with a cupola. The inside room of the structure is about 3 meters long and about 7 meters wide. Beyond the entrance is a narrow staircase that leads to the grave room at the base of the minaret. The roofing system of the mausoleum originated in a period in Islamic art in the 11th and 12th centuries. Sources state that this type of mosque and mausoleum might have originated in Iraq although there are similar structures in locations around regions of Iran. The Dome The Mausoleum’s dome is made out of muqarnas, (also known as stalactite or honeycomb vaulting) one of the most original inventions of Islamic architecture which can appear in a variety of materials such as; stucco, brick, stone, and wood. Muqarnas can be applied in multiple architectural forms including; cornices, corbelled transitions, capitals, vaults, and domes, as with the Zumurrud Khatun Mosque. Brick vaults and domes have been known in the Near East since Sassanian times, if not before, but the dome in muqarnas is a truly Islamic creation without precedent in any civilization. According to Yasser Tabba author of, "Muqarnas Vaulting and Ash’ari Occasionalism”, describes Zumurrud Khatun’s shrine to be the “most graceful profile and one of the most integrated interiors of all conical muqarnas domes." Not only does the dome consist of an octagonal base it also includes geometric decorations that support the conical brick vault. In which the Muqarnas display their exterior articulations of the muqarnas on the outside instead of its interior which makes the illusion of the dome to appear as pinecone. The Structure The mausoleum of Zamurrud Khatum is designed as a monumental and unique Islamic structure similar to Islamic architecture of the time. It is developed with integrated layers that make its structure artistic. Its base is octagonal, a transition that has informed the construction of modern structures such as the Pentagon in the United States. On top of its octagonal base, the mausoleum gradually and unobtrusively transitions into a dome of sixteen cells pegged on muqarnas squinches that keeps the base and the upper part in sync. Seven tiers occupy most of the sixteen cells, stucco-layered against the remaining tiers. Each of the cells embodies a tiny opening covered by thick glass, giving the viewer an obscured view. Controversies Identification Controversy According to Vincenzo Strika, The Mosque and Mausoleum of Zumurrud Khatun have been repeatedly misidentified