价格大跌！10年前1.8万元入手，如今卖180元，网友：早知道买黄金……

Group 1 - The diamond industry is facing one of the most severe and prolonged crises in modern history, influenced by declining luxury goods consumption in major markets, the rising popularity of lab-grown diamonds, and increasing gold prices, leading consumers to shift towards lighter jewelry [1] - De Beers, the world's largest diamond producer, has announced a price reduction for rough diamonds over 0.75 carats during its first auction of the year, with expected price cuts in the range of 10% to 15% due to decreased market demand [3][6] - The RapNet Diamond Price Index indicates that prices for diamonds are declining, with a projected drop of over 20% for 0.5-carat diamonds in 2025, reflecting the impact of lab-grown diamonds and weak demand [3] Group 2 - The resale value of diamonds has significantly decreased, with certified diamonds dropping in price by 35% to 40% in 2023, and some consumers reporting a 99% depreciation in value for their diamond purchases [7][9] - The price of lab-grown diamonds has fallen over 50% from peak levels, with current prices for 1-carat lab-grown diamonds at approximately 3,500 yuan, which is less than one-tenth the price of comparable natural diamonds [10] - The market for lab-grown diamonds is expected to exceed 100 billion yuan in China by 2030, with China currently accounting for about 63% of global lab-grown diamond production capacity [10]