26th Congress of the Communist Party of the Soviet Union (diamond)
| Weight | 342.57 carats (68.514 g) |
|---|---|
| Color | Fancy lemon yellow |
| Country of origin |
 Soviet Union. |
| Mine of origin | Mirny |
| Discovered | 1980 |
| Cut by | Raw |
| Original owner | Soviet state. |
| Owner | Russian Diamond Fund, Moscow Kremlin. |
| Estimated value | Never put on sale |
The 26th Congress of the Communist Party of the Soviet Union (26th Congress of the CPSU, Russian: XXVI съезд КПСС) is a 342.57 caratfancy lemon yellow raw diamond, the largest gem diamond ever found in Russia or the territory of the former USSR, and one of the largest in the world as of 2016.
It was mined at the Mir kimberlitic pipe (Yakutia, Far Eastern Federal District) on December 23rd,1980 and named after the 26th Congress of the Communist Party of the Soviet Union, opening February 23, 1981.
It is kept in the Russian Diamond Fund (Moscow Kremlin).
...
Wikipedia