原文标题： Exclusive: Japan, US eye synthetic diamond production under $550 bln investment plan 原文连结：https://tinyurl.com/77e6k552 发布时间：January 27, 2026 2:13 PM GMT+8Updated 49 mins ago 记者署名：By Tamiyuki Kihara and Makiko Yamazaki 原文内容： TOKYO, Jan 27 (Reuters) – A plan to build a synthetic diamond plant in the United States is a prime prospect in Japan's $550-billion investment package, as the allies push to expand production of a material vital to chip and high-precision manufacturing , sources said. 东京，1月27日（路透）－ 消息人士表示，在日本规模达5,500亿美元的对美投资方案中，在美国兴建一座人造钻石 工厂被视为最具代表性的项目之一。此举反映美日两国正积极扩大对半导体与高精密制造 至关重要材料的生产能力。 It could be among the first batch of projects, details of which Reuters is reporting for the first time, set to be unveiled ahead of a U.S. visit by Japanese Prime Minister Sanae Takaichi planned as early as March, the two sources said. 两名消息人士指出，该项目可能列入首批公布的投资计画之中，相关细节为路透首次披露 ，并可能在日本首相高市早苗最快於3月访美前对外公布。 Both declined to be identified as the matter is private. 由於此事仍属私下磋商阶段，两人均要求匿名。 "The United States wants to accelerate domestic production of synthetic diamonds," one of the sources said. "By involving Japanese companies, Washington hopes to build a U.S.–Japan supply chain that does not rely on China." 其中一名消息人士表示：「美国希望加速本土人造钻石的生产。透过引入日本企业，华府 希望建立一条不依赖中国的美日供应链。」 China's recent moves to put export controls on some artificial diamonds has underscored the strategic importance of the material, most of which is now produced in China. 中国近期对部分人造钻石实施出口管制的行动，凸显此材料的战略重要性，而目前全球大 多数人造钻石产量都来自中国。 The synthetic diamond project involves Element Six, a part of De Beers Group, the world's leading diamond company, the source added. 该人造钻石项目将涉及 Element Six 公司，该公司隶属於全球最大钻石集团戴比尔斯（ De Beers），消息人士补充说。 The news comes as Japan accelerates efforts to finalise projects under the initiative agreed as part of Tokyo's deal with Washington to lower tariffs on Japanese exports. 此消息传出之际，日本正加快敲定一系列投资项目，这些项目是东京与华府就降低日本出 口关税所达成协议的一部分。 Its investment package would include equity, loans and loan guarantees from state-owned agencies Japan Bank for International Cooperation (JBIC) and Nippon Export and Investment Insurance (NEXI). 这项投资方案将包含来自日本国际协力银行（JBIC）与日本贸易保险公司（NEXI）的股权 投资、贷款与贷款保证。 At the same time, President Donald Trump is raising tariffs on South Korea, which it accuses of dragging its feet on adopting a similar agreement reached last year. 同时，唐纳德·川普总统正提高对韩国的关税，并指控韩国在落实去年达成的类似协议上 行动迟缓。 Also likely to figure in the first batch of projects is a large-scale power- generation project, involving Japanese industrial conglomerate Hitachi Ltd, the sources said. 消息人士指出，首批项目中还可能包括一个大型发电计画，由日本工业巨头日立公司参与 。 The deal value of the projects was not immediately known. 这些项目的总交易金额目前尚未确定。 Japan's trade ministry declined to comment on the projects under discussion, saying it was in talks with the United States to swiftly put together the project pipeline, but nothing had been decided. 日本经济产业省拒绝对讨论中的项目发表评论，仅表示正与美国磋商以尽快建立项目清单 ，但尚未做出最终决定。 Hitachi said it was engaged in discussions with the Japanese and U.S. governments, but declined further comment. 日立表示，确实正与日本与美国政府进行讨论，但拒绝进一步评论。 De Beers Group, the U.S. commerce department and its Japan embassy did not immediately respond to a request for comment outside business hours. 戴比尔斯集团、美国商务部及其驻日使馆在非上班时间内未立即回应置评请求。 A major infrastructure project involving construction of a data centre linked to SoftBank Group also remains a finalist, Reuters reported this month. 路透本月稍早报导，另一个进入最後名单的大型基础建设项目，是与软银集团相关的资料 中心建设计画。 One of the hardest known materials, diamond is crucial to high-precision manufacturing. 钻石是已知最坚硬的材料之一，对高精密制造至关重要。 It is used for ultra-fine polishing of semiconductors, machining hard metals and ceramics in quantum devices, and dissipating heat in advanced electronic systems. 它被用於半导体的超精细抛光、量子设备中硬金属与陶瓷的加工，以及先进电子系统的散 热。 Artificial diamonds also have dual-use military applications, in turning out munitions and radar components. 人造钻石同时具有军民两用价值，可用於制造弹药及雷达零组件。 心得/评论： 人造钻在先进工业的用途 半导体抛光、雷达零件、弹药加工、散热基板、量子设备等等 中国约占全球产量 80%～90%以上 部份精密用途甚至市占高达 90～95% 所以 美国日本戴比尔斯体系 要共同打造一条不经中国的人造钻战略供应链 以支撑半导体、AI、军工与量子科技的长期安全 --

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