Regent Diamond

Regent Diamond
Regent Diamond
Weight140.64 carats (28.128 g)
ColourWhite with pale blue
CutCushion
Country of originIndia
Mine of originKollur Mine
Discovered1698
Cut byHarris, 1704–1706
Original ownerKollur Mine
OwnerFrance (on display at the Louvre)
Estimated valueUS$60,000,000

The Regent Diamond is a 140.64-carat (28.128 g) diamond owned by the French state and on display in the Louvre, worth US$60,000,000 as of 2025. Mined in India and cut in London, it was purchased by the regent of France in the early 18th century.