CLEAN : Giant flawless pink diamond up for

The video discusses the Pink Star, the largest known vivid pink diamond, highlighting its rarity and value. It explains the grading system by the Gemological Institute of America, noting that vivid pink is the highest grade. The video also covers the unique coloration of pink diamonds, which is due to a distortion in the crystal lattice, unlike blue diamonds that get their color from boron impurities. The Pink Star's market value is estimated at $60 million, and it is internally flawless, belonging to the rare Type 2A category, known for their optical and chemical purity.

Why are pink diamonds considered to be amongst the rarest of all colors?

What was the estimated value of the pink diamond mentioned in the text?