What are the auditing processes for diamond supply chains?

Apr 30, 2021 ... Diamonds are a standout amongst the most loved gemstones. Regardless of basic conviction, these precious stones are not uncommon. Jan 27, 2025 ... Learn about natural red diamonds, the rarest diamond color. Explore their formation, value, and why they're the most expensive gems on Earth. We ... 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 ... Apr 10, 2023 ... These five diamonds are some of the rarest and most valuable gemstones in the world. Their rarity is due to their unique colors, sizes, and exceptional ... Oct 7, 2023 ... The 10 Most Expensive Diamonds Ever Sold at Auction · 1) Pink Star. Price: $71.2 million · 2) Oppenheimer Blue. Price: $57.5 million · 3) Pink ... Feb 18, 2025 ... Natural red diamonds are among the rarest gemstones on Earth, and the Winston Red Diamond stands out as exceptional. At 2.33 carats, it ranks ... 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 – ... Sep 26, 2022 ... A beautiful blue flaw in a gem-quality diamond from Botswana is actually a tiny fragment of Earth's deep interior—and it suggests our planet's ... Oct 24, 2019 ... An Auction Item. Article content. The Argyle closing is expected to bring renewed attention to pink diamonds at auction as buyers snap up ... 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.