And yes, before you harp on it, the land we call America should go back to the Native Americans, the aboriginals of Australia and New Zealand should also get their lands back. Or whoever else has been the subject of conquest.
Ultimately, slavery, caste, and colonization are institutions of brutality.
Reparations are owed.
Britain can never repay the damage colonization caused to India. But it can return the diamond as an admission of guilt. And sure, it’s owed to a bunch of countries. I’m pretty sure India, Pakistan, Bangladesh, Sri Lanka can figure out a shared ownership model for the diamond. They seem to get along fine sharing cricket trophies when there’s a draw.