培育钻石板块反复活跃，沃尔德涨超7%

Core Viewpoint - The cultivated diamond sector is experiencing significant activity, with notable stock price increases among several companies. Group 1: Stock Performance - Wald has seen a stock price increase of over 7% [1] - Sifangda has experienced a stock price rise of over 6% [1] - Other companies such as Huifeng Diamond, Hengsheng Energy, Chaohongji, and Huanghe Xunfeng have also shown upward movement in their stock prices [1]