U.S. tariff hike to cut Indian diamond polishers’ revenue by 28-30% this fiscal : CRISIL August 29, 2025 Export - Import, Global Trade, Trade, Trending News NEW DELHI : The imposition of 50% tariffs (25% reciprocal plus 25% penalty) by the U.S. on gem and jewellery is expected to lead to a revenue fall of India’s natural diamond polishing industry