The $550 billion investment plan between Japan and the United States has been revealed: a facility producing synthetic diamonds will be the core project and is expected to be announced before the Prime Minister's visit to the United States.

According to informed sources, one of the core projects in Japan's proposed $55 billion investment plan is the plan to build a synthetic diamond factory in the United States. This is an effort by both countries to expand the production of materials crucial for chips and high-precision manufacturing. Two informed sources said this may be one of the first projects to be announced. These projects are planned to be announced as early as before Japanese Prime Minister Kishida Fumio's visit to the United States in March. One of the sources said, "The United States hopes to accelerate the production of synthetic diamonds domestically. By introducing Japanese companies, Washington hopes to establish a US-Japan supply chain." The source added that the synthetic diamond project involves Element Six, a subsidiary of the world's leading diamond company, De Beers Group. The Japanese Ministry of Economy, Trade and Industry declined to comment on the ongoing discussions about the project, saying they are in negotiations with the United States about quickly advancing the project list, but no decisions have been made yet.