The Diamond Fund (Russian: Алмазный фонд) is a unique collection of gems, jewelry and natural nuggets, which are stored and exhibited in the Kremlin Armoury in Russia.

The Fund was opened in 1967 and its collection dates back to the Russian Crown treasury instituted by Emperor Peter I of Russia in 1719.

The gem collection of Peter I, established in 1719, was later stored in the Diamond Chamber (Бриллиантовая комната) in the Winter Palace.

The Imperial collection was moved from Saint Petersburg to Moscow during World War I; the Soviet Diamond Fund was officially established in 1922.

Foreign visitors can receive an audioguide in English, German, French, Spanish, Italian, Chinese or Japanese.