Largest Uncut Diamond

Dear Mr. Cuellar,
I have a question regarding the diamond that my friend has. It is a 5 kg. uncut diamond. And he is looking for a buyer that’s why i am helping him to look for one who is interested. Do you think it is possible to sell or market that item here in the United States because the item is still outside of this country. If you are interested we can provide you with a photographs.
Thank you in advance and i hope for your response soon.

Rey