CLEAN : Rare pink diamond to go under hammer in Geneva

The video discusses the Fortune Pink diamond, a rare and valuable fancy vivid pink pear-shaped diamond weighing 18.18 carats. It highlights the rarity of such diamonds, especially those with strong color saturation and good clarity. The diamond has been in a private collection for years and is now seeking a new owner to continue its legacy of luck.

What are the different degrees of pink diamonds mentioned in the text?

Why is it rare to find a pink diamond of over 18 carats with good clarity?