[The concept of cultured diamonds rebounded in shock, and Wald rose more than 10%] On October 30, the concept of cultured diamonds rebounded in shock, Wald rose more than 10%, and Power Diamond, Sifangda, Huifeng Diamond, etc. surged higher. According to the news, the demand for lab-grown diamonds may have entered a recovery channel with both volume and price rising. After the rapid expansion of production capacity and the price war in the early stage, small and medium-sized production capacity has gradually been cleared, and the relationship between supply and demand has improved. Since the first quarter of this year, peer companies have successively issued price increase letters. As of the third quarter report, Power Diamond's comprehensive gross profit margin was 37.48%, an increase of 15.25 percentage points from the end of 2025.