Can someone tell me something about purple diamonds?

According to the Daily Telegraph, the mining giant Rio Tinto found an extremely rare purple diamond in its diamond mining area in argyle, Western Australia. The original stone weighs 9. 17 carat, and it is 2.83 carat after cutting and polishing. Argyle diamond mine is famous for producing the best colored diamonds in the world. The world's largest pink diamond, the 12.76-carat "ArgylePinkJubilee", also comes from here, with an estimated price of 100-200 USD per carat. Purple diamonds are even rarer than red diamonds and pink diamond. Royal Purple Heart is the largest fancy cut purple diamond known at present, weighing 7.34 carats. Julius Klein Diamond Company cut it into a perfect heart shape, but the most striking thing is its natural purple color. Natural purple diamonds are the rarest in the world, and purple diamonds over 5 carats are extremely precious, not to mention the royal purple heart weighing 7.34 carats. The current owner of this diamond has not been confirmed.