Mastercut Diamond - was designed by Jean Paul Tolkowsky, who together with his father Gabi Tolkowsky cut the worlds largest diamond in 1991. The Golden Jubilee diamond was presented as a gift
![Diamond cutting expert Jean Paul Tolkowsky, right, and C. Krishniah Chetty and Sons (CKCS) Managing Director Vinod Hayagriv look on during a function to announce a partnership between European diamond house Tolkowsky Diamond cutting expert Jean Paul Tolkowsky, right, and C. Krishniah Chetty and Sons (CKCS) Managing Director Vinod Hayagriv look on during a function to announce a partnership between European diamond house Tolkowsky](https://l450v.alamy.com/450v/2pa27b3/diamond-cutting-expert-jean-paul-tolkowsky-displays-a-replica-of-a-599-carat-rough-de-beers-centenary-diamond-during-a-presentation-to-announce-a-partnership-between-european-diamond-house-tolkowsky-and-indias-c-krishniah-chetty-and-sons-in-bangalore-india-friday-june-6-2008-according-to-company-officials-the-original-599-carat-rough-de-beers-centenary-diamond-was-cut-by-gabi-tolkowsky-and-assisted-by-his-son-jean-paul-tolkowsky-into-the-27385-carat-making-it-the-largest-and-most-flawless-modern-cut-diamond-in-the-world-a-task-which-took-three-years-ap-photoaijaz-rahi-2pa27b3.jpg)
Diamond cutting expert Jean Paul Tolkowsky, right, and C. Krishniah Chetty and Sons (CKCS) Managing Director Vinod Hayagriv look on during a function to announce a partnership between European diamond house Tolkowsky
![Diamond cutting expert Jean Paul Tolkowsky, right, and C. Krishniah Chetty and Sons (CKCS) Managing Director Vinod Hayagriv look on during a function to announce a partnership between European diamond house Tolkowsky Diamond cutting expert Jean Paul Tolkowsky, right, and C. Krishniah Chetty and Sons (CKCS) Managing Director Vinod Hayagriv look on during a function to announce a partnership between European diamond house Tolkowsky](https://l450v.alamy.com/450v/2pa27ay/diamond-cutting-expert-jean-paul-tolkowsky-only-hand-seen-displays-the-replica-of-the-599-carat-rough-de-beers-centenary-diamond-during-a-presentation-to-announce-a-partnership-between-european-diamond-house-tolkowsky-and-indias-c-krishniah-chetty-and-sons-in-bangalore-india-friday-june-6-2008-according-to-company-officials-the-original-599-carat-rough-de-beers-centenary-diamond-was-cut-by-gabi-tolkowsky-and-assisted-by-his-son-jean-paul-tolkowsky-into-the-27385-carat-making-it-the-largest-and-most-flawless-modern-cut-diamond-in-the-world-a-task-which-took-three-years-ap-photoa-2pa27ay.jpg)