When Isabella Jagiellon, daughter of the Polish King Sigismund I, got married to the King of Hungary Ján Zápoľský in 1539, she was given an exceptional jewel as a gift. The impressive gold pendant was fitted with sixteen opals in the shape of tear, which undoubtedly came from the locality of the Slanské vrchy mountains. To this day, this jewel is deposited in the collections of the Museum in Budapest.