[pippy]

Also would the world be a better place if they gave it back to some third party, so it can be sold to a private collection and be locked in a vault somewhere?

Where it is now has a lot of historical and cultural significance. It is currently being admired publicly by thousands of people, sitting on the coffin of Queen Elisabeth.

[OJFord]

> It is currently being admired publicly by thousands of people, sitting on the coffin of Queen Elisabeth. [sic]

I think you mistook that photograph in the article or misread the caption - that was Queen Elizabeth the Queen Mother's coffin; not Elizabeth II's.

The crown 'currently being admired publicly [...]' does not contain the Kohinoor: https://en.wikipedia.org/wiki/Imperial_State_Crown

[blibble]

the Imperial State Crown is the one sitting on HMQs coffin and has the Cullinan II diamond (among many others)

the one in the article (containg the Koh-I-Noor) is the Queen Mother's Crown