A famous diamond of fine quality, which weighs about 137 carats and is among the state jewels of France. It is so called from the Duke of Orleans, Regent of France, to whom it was sold in 1717 by Pitt the English Governor of Madras (whence also called the Pitt diamond), who bought it of an Indian merchant in 1701.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). regent diamond. Retrieved September 26, 2026, from http://smartdefine.org/regent_diamond/definitions/2053919 |
| Chicago | Webster's. 2011. "regent diamond" http://smartdefine.org/regent_diamond/definitions/2053919 (accessed September 26, 2026). |
| Harvard | Webster's 2011, regent diamond, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/regent_diamond/definitions/2053919>. |
| MLA | Webster's. "regent diamond" 27 May 2011. Web. 26 September 2026. <http://smartdefine.org/regent_diamond/definitions/2053919> |