In the early 1990s, De Beers faced a significant challenge. The competition in the jewelry market had intensified dramatically, with brands like Allure and Midas emerging as serious contenders. Create an image depicting a boardroom scene with De Beers executives looking concerned and strategizing over market reports. The atmosphere is tense, with charts showing declining market share and competitors' success stories. Use a 16:9 aspect ratio suitable for YouTube videos. The lighting should be mysterious and dramatic, with professional and realistic details.