FAQ

"Artoff" is the only character name given.

According to the film, the diamond gets its name from a flaw in the colorization, because it is slightly pink, and when held up to the light, it is possible to see a panther-like figure inside, hence why it's called "the Pink Panther".

Unfortunately no. However, there is a similar rare diamond that can be compared to the diamond shown in the film, known as the Pink Star, which sold for £52,000,000 ($83,000,000 USD).

Source: http://www.dailymail.co.uk/news/article-2506934/The-real-Pink-Panther-A-record-price-52million-worlds-finest-diamond-sold-anonymous-bidder.html