Pink diamonds derive their colour from structural changes in the crystal lattice rather than chemical impurities, and were formed deep within the Earth around 1 to 3 billion years ago. Their creation belongs to one of the rarest geological transformations found in nature. 

Value is driven by colour intensity and distribution, with the finest stones maintaining vivid saturation alongside sufficient transparency. Among the rarest of all diamonds, the value of Fancy Vivid Pink increases exponentially with intensity, purity of hue, and size. 

The Argyle mine historically yielded the vast majority of pink diamonds, shaping the global market prior to its closure in 2020. Argyle remains one of the most important chapters in the history of coloured diamonds, associated with rarity and extraordinary saturation.