Why a Single 5.51-Carat Diamond Commanded $17.3 Million in Geneva
The triangular-cut blue-green stone has a color so improbable that, as the Gemological Institute of America notes in its materials, some might assume it's been artificially enhanced.
The triangular-cut blue-green stone has a color so improbable that, as the Gemological Institute of America notes in its materials, some might assume it's been artificially enhanced.