The term “King of the Diamond Market” is not an official or widely recognized title but is sometimes used to describe key players or companies with significant influence in the global diamond industry. The diamond market is highly competitive and consists of various stakeholders, including mining companies, diamond dealers, retailers, and jewelry brands. Different entities and individuals may be considered influential in different aspects of the diamond market. Here are a few notable figures and entities often associated with influence in the diamond industry:

• De Beers Group: De Beers is one of the world’s largest and most well-known diamond mining and trading companies. It has historically played a dominant role in the diamond industry and is known for its marketing campaigns and the establishment of the “diamond engagement ring” tradition.
• ALROSA: ALROSA is a major Russian diamond mining company and one of the world’s largest producers of rough diamonds. It plays a significant role in the global diamond supply chain.
• Laurence Graff: Laurence Graff, the founder of Graff Diamonds, is known for his involvement in acquiring and dealing with some of the world’s most exceptional diamonds. Graff Diamonds is a luxury jewelry brand associated with high-end diamonds and gemstones.
• Harry Winston: Harry Winston was a renowned American jeweler known for acquiring and dealing with rare and exceptional diamonds. The brand continues to be associated with high-quality diamonds and fine jewelry.
• Blue Nile: Blue Nile is an online diamond and jewelry retailer known for its vast selection of diamonds and engagement rings. It has been influential in shaping the e-commerce side of the diamond market.
• Tiffany & Co.: Tiffany & Co. is a globally recognized luxury jewelry brand that plays a significant role in the diamond and jewelry market, known for its iconic blue box and high-quality diamonds.

It’s important to understand that the diamond market is complex, and its influence can be attributed to various aspects of the industry, such as mining, trading, retailing, and branding. The concept of a single “King of the Diamond Market” is somewhat subjective, as different entities and individuals may be considered influential in different ways and at different times in the industry’s history.