This document summarizes an investigation conducted by the Directorate of Revenue Intelligence (DRI) into alleged misdeclaration of export values of cut and polished diamonds by six companies between 2004-2005 and 2005-2006. The DRI analyzed import/export trends and found a large spike in diamond imports from and exports to specific countries that coincided with new export promotion schemes. One company, Adani Exports Ltd., saw its diamond exports increase over 500% while other major exporters did not see similar growth. Simultaneous searches were conducted at several company premises. The document outlines background information found on the six noticed companies, including Adani Exports Ltd. which saw its exports rise from Rs. 377 crores to over Rs. 7