Saad Ismail Al Jassim, 73, is widely recognized as “the old pearl diver” in Qatar. His store attracts a steady stream of intrigued patrons at Souq Waqif, a newly renovated shopping establishment that models ancient Islamic architecture. Surrounding structures resemble a fort constructed of sharp geometric shapes covered in creamy gypsum. Mazes of merchants stockpile handicrafts, fabrics, perfumes, spices and fresh foods. Known for its art and culture, the mall complex is appropriately anchored by Jassim’s shop.