What are the ongoing research efforts in gemology related to diamond identification and rarity?

Jan 28, 2025 ... Red diamonds are among the rarest and most valuable types of diamonds. In fact, fewer than 30 red diamonds are known to exist in the world! Jul 1, 2024 ... Our roundup of the world's most expensive diamond rings delves into the different colors, sizes, and price tags of these mesmerizing jewels. Jan 7, 2017 ... The rarest of the fancy colored diamonds are the saturated pinks, greens and blues. The least rare are the yellows and browns. Fancy color diamonds are known for their exquisite beauty. These rare gemstones account for less than 0.1% of the annual production of all diamonds in the world ... It's estimated that only around 20 to 30 true gem-quality red diamonds exist in the world, some weighing less than one carat. Here, we have put a list of the Top Most Expensive Diamond, an undefined beauty with rich culture and history! Dec 20, 2024 ... Meta Description: Discover the world's rarest diamonds! We explore the factors determining rarity—color, clarity, carat weight, and cut—and ... Apr 8, 2025 ... $100 million worth of world's rarest diamonds displayed at exhibition in Abu Dhabi ... “The principal reason for us being here is to unveil the ... Red diamonds are commonly known as the most expensive and the rarest diamond ... ^ Argyle Everglow : One of the world's rarest Red Diamonds unveiled in New York ... Apr 9, 2025 ... The World's Most Expensive Gemstones · The Pink Star Diamond – $71.2 Million · The Oppenheimer Blue – $57.6 Million · The Estrela de Fura Ruby – ...