in Islam animal patterns are not allowed so artisans used floral & geometrical patterns,its why this is a speciality in Islamic art in muslim world.AlHmbra and taj mahal in spain is the master piece of this are.many times the verses of Holy Quran was used in beautiful calligraphical style to decorate the minarets,walls,plates & documents etc.this calligraphical pattern are called as fun-ne-khattati.there are various styles in this writing pattern.these all styles are awesome.see the qutub minar in mehrauli ,new delhi.sir syed ahmad khan in his famous book 'aasar-us-sanadeed'given an awesome picturesque account of qutub minar's calligraphical work,mainly verses from the holy quran and many interesting things in the book.hand works and architectural monuments of muslim era of indian sub continent are the subject of the book.the origin of indian stone and wooden carved handicraft can be traced from these monuments.