The Treasury also said it had taken steps to bar the import of certain categories of diamonds mined in Russia, another step designed to deprive Moscow of foreign revenues following the 2022 invasion of Ukraine.

In a statement, the Treasury Department said it had imposed sanctions on three UAE-based entities - Zeenit Supply and Trading DMCC, Talassa Shipping DMCC and Oil Tankers SCF Mgmt FZCO - as well as on Liberia-registered NS Leader Shipping Incorporated.

The price cap imposed by the Group of Seven countries, the European Union and Australia bans the use of Western maritime services such as insurance, flagging and transportation when tankers carry Russian oil priced at or above $60 a barrel.

(Reporting by Daphne Psaledakis, Ismail Shakil and Arshad Mohammed; editing by David Ljunggren)