DiamondBuzz
Japan, US Weigh Synthetic Diamond Facility to Strengthen Strategic Supply Chains
Industrial lab-grown diamonds for semiconductors and advanced manufacturing may be part of Japan’s planned $550 billion investment push into the US.
Japan and the United States are exploring the establishment of a synthetic diamond manufacturing facility in the US as part of Japan’s proposed $550 billion investment programme, according to a Reuters report citing sources familiar with the matter.
The proposed plant would focus on the production of lab-grown diamonds (LGDs) for industrial use, including applications in semiconductors, precision cutting tools and other advanced manufacturing technologies. Synthetic diamonds are increasingly viewed as a critical input for high-end industries due to their durability, thermal conductivity and performance advantages.
Discussions come amid rising concerns in Washington and Tokyo over global supply chain vulnerabilities, particularly the heavy reliance on China, which currently dominates synthetic diamond production. China has also imposed export controls on certain strategic materials, heightening the urgency for alternative supply sources.
The project could be among the early initiatives announced ahead of a potential visit by Japan’s prime minister to Washington. Companies such as Element Six, the industrial diamond arm of the De Beers Group, are said to be potential participants, while Japanese state-backed institutions may provide financial support.
Sources cautioned that talks are still at an early stage and no formal agreements have yet been finalised.
DiamondBuzz
AWDC Hails EU-India Trade Pact, Sees Strong Export Boost for Antwerp-Polished Diamonds in India
Tariff cut on Antwerp-polished diamonds seen boosting exports and strengthening Europe’s position in India’s fast-growing jewellery market.
The Antwerp World Diamond Centre (AWDC) has welcomed the conclusion of the EU–India trade agreement. The pact provides for a reduction of India’s import duty on naturally polished diamonds of European origin, from 5.5% to 2.5%. AWDC said the tariff reduction follows its sustained lobbying in close coordination with the European Commission.

“We are extremely pleased with the outcome of the long-awaited trade agreement between Europe and India,” said Karen Rentmeesters, CEO of AWDC. “Thanks to AWDC’s intensive and sustained lobbying, in close cooperation with the European Commission, India’s import duty on polished diamonds has been reduced from 5.5% to 2.5%. This is an important boost for the Belgian diamond sector and is expected to have a positive impact on exports of Antwerp-polished diamonds to India.”
She added that the agreement strengthens Antwerp’s competitive position as a polishing hub. “Diamonds polished in Europe will now be able to enter India at a more favourable tariff than before, and also compared to other major trading hubs. India is one of the fastest-growing consumer markets for jewellery and therefore also offers strong prospects for European diamonds.”
Rentmeesters also highlighted the importance of tariff stability. “Since 2012, we have seen the tariff fluctuate from 2% to 2.5%, then to 5% and even 7.5% in 2018, before falling again to 5.5% in 2022. This lack of predictability created uncertainty within the sector. The fact that the tariff is now anchored in a trade agreement provides much-needed stability in a period that — partly due to geopolitical developments — is particularly challenging for the diamond sector, as it is for many other sectors.”
Trade agreements need to be ratified by European and national parliaments before entering into force. This procedure that usually takes multiple months or sometimes even years, AWDC noted.
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