What documentation is needed from Brazil to Import Marble blocks to UK?

Question posted by Nitin Datta, on behalf of Kobalt Notaries Limited in SW10

Dear Everybody

I have a query that I want to Import Marble Blocks to UK from Brazil.
What documentation will I need as a UK company in Brazil to Import Marble blocks from Brazil?
I already have finalized a Quarry in Brazil for Import. Please let me know what documents will I need in Brazil to take the Marble blocks out of Brazil?