“Ocean Dream” Blue-Green DiamondEstimate: CHF 7–10 millionA 5.50-carat triangular-cut blue-green diamond, certified by the GIA as Fancy Vivid Blue-Green in color and SI1 in clarity; classified as a Type Ia diamond. Blue diamonds, renowned for their extreme rarity and deep-mantle origin, have historically symbolized royalty and mystery, with the 17th-century Indian Kollur mine-sourced Hope Diamond…
