They never really tell you how much it all cost to build this incredible Mosque but they DO tell you some facts which are:
The Sheikh Zayed Grand Mosque has seven imported chandeliers from Germany that incorporate millions of Swarovski crystals. The largest chandelier is the second largest known chandelier inside a mosque, the third largest in the world and has a 33 ft diameter and a 49 ft height.
The carpet in the main prayer hall is considered to be the world’s largest carpet made by Iran’s Carpet Company and designed by Iranian artist Ali Khaliqi. This carpet measures 60,570 sq ft, and was made by around 1,200-1,300 carpet knotters. The weight of this carpet is 35 ton and is predominantly made from wool (originating from New Zealand and Iran). There are 2,268,000,000 knots within the carpet and it took approximately two years to complete.
The 96 columns in the main prayer hall are clad with marble and inlaid with mother of pearl, one of the few places where you will see this craftsmanship.
The muaadhin (prayer call) comes from the Mosques to remind all to pray 5 times a day. When the first prayer of the day(fajr) is called at the break of dawn the muaadhin also adds a small phrase that says “prayer is better than sleeping”. This is a reminder to the faithful that it’s time to get up and pray.
You will also notice that in all shopping malls and commercial buildings in Abu Dhabi, there are prayer rooms.