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Group 1 - De Beers has historically dominated the diamond industry, controlling 90% of the global rough diamond supply at its peak, and has been a key player in shaping market prices and availability through strategic marketing and supply limitations [2][4][28] - The company's marketing strategy, epitomized by the slogan "A Diamond is Forever," has significantly influenced consumer behavior, with the engagement ring wearing rate in the U.S. rising from 10% in 1939 to 75% today [1][2] - However, De Beers is currently facing significant challenges, with a reported revenue drop from approximately $6.6 billion in 2022 to $4.3 billion in 2023, and a staggering 40% decline in rough diamond sales [15][12][20] Group 2 - The diamond market is experiencing a shift due to increased competition from new mining regions and the rise of synthetic diamonds, which are now accepted by over 80% of U.S. consumers [28][34] - De Beers' market share has decreased to less than 30%, with competitors like Russia's Alrosa gaining ground, leading to a significant reduction in pricing power [28][29] - The overall demand for diamonds is declining, particularly in the context of changing consumer preferences and a decrease in marriage rates, which has historically been a primary driver of diamond sales [50][53] Group 3 - In 2023, De Beers reported a net loss of $314 million, the highest in 15 years, and a 44% drop in rough diamond sales in the first quarter compared to the previous year [15][12][24] - The company has resorted to price cuts and production reductions to manage excess inventory, yet these measures have not resulted in a significant recovery in sales [20][22] - The broader luxury goods market is also struggling, with major brands like Gucci and LVMH experiencing stock price declines, indicating a wider trend affecting the luxury sector [47][49]