 Major Western collections hold many objects of widely varying materials with Islamic geometric patterns . The Victoria and Albert Museum in London holds at least 283 such objects , of materials including wallpaper , carved wood , inlaid wood , <unk> or lead @-@ glazed earthenware , brass , stucco , glass , woven silk , ivory , and pen or pencil drawings . The Metropolitan Museum of Art in New York has among other relevant holdings 124 mediaeval ( 1000 – 1400 A.D. ) objects bearing Islamic geometric patterns , including a pair of Egyptian minbar ( pulpit ) doors almost 2 m. high in rosewood and mulberry inlaid with ivory and ebony ; and an entire mihrab ( prayer niche ) from Isfahan , decorated with polychrome mosaic , and weighing over 2 @,@ 000 kg . 
