The disruptions around Russian diamonds are being felt through the global industry, which was already facing a shortage of rough stones even before the war in Ukraine.
Silver and wood products from Russia will also be prohibited and tariffs will be increased by 35% on 130 million pounds ($170 million) worth of diamonds and other products,
Elon Musk warns investors about lithium supply, but a new McKinsey report says geothermal, oilfield brines and new extraction technology can meet seven-fold demand growth.
Company's Q1 production fell 10% year on year, partly owing to operations running at reduced capacity because of higher rates of covid-19 infections among workers.