India, Pakistan, and Afghanistan have all stated earlier that they would make "all possible efforts" to arrange the return of the $800 million Kohinoor diamond.
India Demands its Kohinoor Diamond Back - Asia Sentinel
Indians want King Charles III to return Kohinoor, a massive 105-carat diamond worth $591 million - ABC News
Former Colonies Of The British Empire Demand Return Of Diamonds Worth $800 Million From The Crown Jewels
Former colonies of the British Empire want diamonds worth $800 million back from the Crown Jewels
DNA Explainer: Can India get its Kohinoor diamond back from UK Royal Family? Know controversial past
Crowns worn by Queens Adelaide, Mary and Alexandra could be worn by Camilla at Charles' coronation
More information is coming out about the jewels “given” to the British Royal Family? Does anyone think this wealth will be given back to the people it was stolen from? - Quora
Hear why people are upset about a massive diamond on royal crown
Daria-i-Noor - Wikipedia
Former colonies of the British Empire want diamonds worth $800 million back from the Crown Jewels
What is the weight of the Kohinoor diamond? - Quora
Why the Kohinoor diamond won't make an appearance at King Charles III's coronation