Sizable single crystals of a nonlinear optical (NLO) material, Bi(2)ZnOB(2)O(6), were grown by the Kyropoulos method from stoichiometric ratio compound melt. It is a congruent melting compound and crystallizes in the orthorhombic system, space group Pba2. The morphologies and habits of Bi(2)ZnOB(2)O(6) crystals grown using , , and  seeds were studied. The SHG efficiency of Bi(2)ZnOB(2)O(6) is 3-4 times that of KDP (KH(2)PO(4)). Its birefringence is pretty large (0.085-0.106). The experiments prove that Bi(2)ZnOB(2)O(6) crystal is nonhygroscopic and excellently deliquescence resistant.