This article is devoted to the first contacts between the representatives of the Soviet Russia and the Irish Republic. As a result of these contacts there were two loans, which were given to the Soviet representatives in New York in 1920. The so-called “Russian Crown Jewels” secured one of the loans. The jewels were stored secretly in Ireland for about 30 years and even had been involved in some events of the Irish politics. In the author’s opinion, the events connected with the receipt, transportation, storage and return of those items to the USSR illustrate changes in the Irish-Soviet diplomatic relations. The author mentioned such political figures as Harry Boland, Eamon de Valera, Patrick McCartan, Michael Collins, Ludwig Martens, Santeri Nuorteva, Georgi Zaroubin.