After the first phase involving foundations and the concrete structure, the mosque was finished with a decoration of Greek and Italian white marble, which is considered to be among the purest of the world. For the interior design, calligraphers from the United Arab Emirates, Syria and Jordan supervised the work of artists from all over the world. Verses from the Holy Quran are written in three types of Arabic calligraphy. The mosque’s spectacularly decorated interior features unique plants designed specifically for the mosque, as well as verses from the Holly Quran. In addition, the designers have also used mosaic to cover the entire courtyard (17,000 square metres) and thus it is considered among the largest open spaces in mosques worldwide. Major international companies specialized in the manufacturing of crystal chandeliers garnished the mosque with seven gold-plated chandeliers in different sizes, made of Swarovski crystals. The largest of the lusters is the largest in the world.