Rock crystal ewers are pitchers carved from a single block of rock crystal

Quartz

Quartz is the second-most-abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. There are many different varieties of quartz,...

. The ewers were made by Islamic Fatimid

Fatimid

The Fatimid Islamic Caliphate or al-Fāṭimiyyūn was a Berber Shia Muslim caliphate first centered in Tunisia and later in Egypt that ruled over varying areas of the Maghreb, Sudan, Sicily, the Levant, and Hijaz from 5 January 909 to 1171.The caliphate was ruled by the Fatimids, who established the...

 artisans and are considered the rarest objects in Islamic art

Islamic art

Islamic art encompasses the visual arts produced from the 7th century onwards by people who lived within the territory that was inhabited by or ruled by culturally Islamic populations...

. There are a few that survived and are now in collections across Europe. They are often in cathedral treasuries, where they were rededicated after being captured from their original Islamic settings. Made in Egypt in the late 10th century, the ewer pictured is exquisitely decorated with fantastic birds, beasts and twisting tendrils. The Treasure of Caliph Mostansir-Billah at Cairo

Cairo

Cairo , is the capital of Egypt and the largest city in the Arab world and Africa, and the 16th largest metropolitan area in the world. Nicknamed "The City of a Thousand Minarets" for its preponderance of Islamic architecture, Cairo has long been a centre of the region's political and cultural life...

, which was destroyed in 1062, apparently contained 1800 rock crystal vessels.

Great skill was required to hollow out the raw rock crystal without breaking it and to carve the delicate, often very shallow, decoration.

External links

• Fatimid Rock Crystal Ewers, Most Valuable Objects in Islamic Art