The data reveal several important findings which can be presented as follows: (i) at the early stage reaction duration (after 20 min) the plas mon band is broadened and simple test for silver ion using NaCl solution shows low conversion of silver ions to metallic silver nano particles at this duration, (ii) prolonging the reaction duration up to 70 min leads to outstanding enhancement in the Plas mon intensity showing that large amounts of silver ions are reduced and used for cluster formation,