At first glance, Steven Press’s new book seems to have moved him away from the global concerns of his first monograph Rogue Empires: Contracts and Conmen in Europe’s Scramble for Africa (2017) towards a more concentrated focus on German colonialism in South-West Africa. The great strength of this book, however, is that Press has again depicted imperialism as a transnational and transimperial affair. His study of Germany’s colonial diamond trade shows the connections not just between the colony and the metropole but how both were enmeshed within the broader strands of early twentieth-century globalization and colonial capitalism. In his account, Press explores the competitive nature of Germany’s relations with its rival, the South African diamond company De Beers and its globally dominant diamond syndicate in London which had long controlled diamond sales and prices worldwide. He also explains how and why ‘German’ diamonds from South-West Africa bypassed German intermediaries to be processed through Antwerp, before being sent to the United States for sale to newly engaged couples encouraged to buy these colonial gems as a commodity-symbol of their mutual affection. Focusing on an aspect of the economics of German colonialism that has escaped most historians’ attention, Press lays out the ways in which Germany’s colonial authorities, most notably the Colonial Secretary Bernhard Dernburg, opted for a cartel system centred on the German Colonial Corporation to compete with De Beers. This cartel effectively controlled the trade of diamonds from a legally created ‘Forbidden Zone’ which excluded all non-cartel members from diamond mining. Alongside this, the administrative Regie (which handled all sales and distribution) also excluded other players by certifying, pricing and controlling the quantity of all diamonds exported from the colony. This snug relationship between German capital and the state, Dernburg hoped, would allow Germany to create a ‘second De Beers’ (p. 81).
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