3 6 Ke·2025-10-22 23:21Core Viewpoint - The cultivated diamond sector is experiencing a surge in stock prices due to recent export controls on synthetic diamond products, despite the industry's historical struggles with profitability and reliance on exports [1][3][10]. Group 1: Market Performance - The cultivated diamond index rose by 16.64% since October 9, with companies like Huifeng Diamond and Sifangda seeing stock increases of over 50% [1]. - Five out of seventeen cultivated diamond stocks have doubled in price this year, with ST Yazhen's stock increasing nearly 600% from its lowest point [1][3]. - The recent export control announcement has led to a wave of stock price increases, including three consecutive trading limits for Huanghe Xuanfeng [1][3]. Group 2: Industry Challenges - The cultivated diamond industry has faced significant losses, with ST Yazhen reporting over 400 million yuan in cumulative losses since 2021, and Huanghe Xuanfeng losing 299 million yuan in the first half of this year [3][5]. - Despite a recent price increase for rough diamonds, the overall performance of cultivated diamond companies remains weak, indicating that the impact of export controls may not be as beneficial as anticipated [12][13]. Group 3: Technological Developments - Cultivated diamonds are increasingly being recognized for their potential applications beyond jewelry, particularly in the semiconductor industry for heat dissipation [16][20]. - The thermal conductivity of diamond makes it a promising material for future semiconductor applications, with projections indicating significant market growth in diamond-based thermal management solutions [20][21]. Group 4: Future Outlook - The cultivated diamond sector is at a critical juncture, with companies exploring new applications in semiconductor technology, which could drive future growth [20][22]. - However, challenges remain in the production and processing stages, particularly in matching the efficiency required by the semiconductor industry [22][25].