Lab-Grown Diamond Stocks Surge in China; Hengsheng Energy Hits Limit Up

This is a broad, synchronized move across the lab-grown diamond supply chain rather than an isolated spike, with gains spanning equipment, laser and diamond producers. That breadth suggests capital is repricing the theme as a whole, not a single company's fundamentals, which makes the durability of the rally the open question. What matters next is whether the buying concentrates in names with actual production exposure or keeps rotating through peripheral concept stocks.