The space diamonds should be taken to appraisers to out how much they are worth, and should also be studied to determine their physical properties, chemical properties and/or whatever other types of properties they may possess.
The diamonds MIGHT have special properties the scientists aren't aware of at first.
Perhaps the scientists would discover they have special uses for the diamonds.
Some of the diamonds should be cashed in at least. The poor and needy COULD benefit from the money.
The scientists, dental and medical people, etc. could use the diamonds in a way to produce MORE food, clothing, shelter and more medical and dental supplies and more medical and dental care for the poor and needy.
Maybe the scientists could use the diamonds to produce SUPER fruits and vegetables and other foods- foods LARGE enough to feed entire villages, at least.
Who knows? Maybe scientists could derive special HEALTH/DIETARY SUPPLEMENTS from the diamonds.