While it is very hard to choose one piece stands out - the world largest uncut diamond of Daryayeh-E-Noor - that rightfully bears the name that describes the entire collection, THE SEA OF LIGHT. This is the sister diamond to the world's largest cut diamond, the "Kooh-e Noor" which is its Persian name and means "The Mountain of Light". Both were taken by Nader from India to Iran.