Core Viewpoint - De Beers has cut rough diamond prices for the first time since December 2024, responding to declining demand, the rise of lab-grown diamonds, and trade disruptions affecting the global diamond market [1][4]. Group 1: Price Cuts and Sales - De Beers implemented price cuts on rough stones weighing more than three-quarters of a carat during its first regular sale of the year [2][9]. - The exact size of the price reductions remains unclear due to changes in billing and the composition of diamond boxes, complicating direct price comparisons [4]. Group 2: Market Conditions - The global diamond industry is experiencing one of its worst downturns in decades, with demand and prices for natural stones significantly declining from 2023 through 2025 [6]. - The rapid rise of lab-grown diamonds has led to a collapse in their prices, allowing them to capture market share, especially in the bridal segment, and undercut natural diamonds [8]. Group 3: Geopolitical and Economic Factors - China's weakening economy and declining marriage rates have negatively impacted demand for diamond jewelry, turning it from a growth engine to a drag on the industry [9]. - Geopolitical factors, including tighter sanctions on Russian diamonds and increased tariffs on Indian imports, have created additional challenges for the diamond supply chain [10]. - The US is the largest market for India's diamond industry, which processes approximately 90% of the world's diamonds by volume; however, higher tariffs have led to a significant drop in diamond exports from India to the US, with reports indicating a reduction of more than half [11].