Krystallopigi (Greek: Κρυσταλλοπηγή) or Kroustallopigi (Κρουσταλλοπηγή), before 1926: Smardesi (Σμαρδέσι)[2] is a former community in Florina regional unit, West Macedonia, Greece.

Krystallopigi borders Albania to the west; Prespes municipality to the north; Korestia municipality, Kastoria regional unit, to the east and southeast; and Kastraki community, Kastoria regional unit, to the south.

The Albanian side of the border crossing is known as Kapshtica, 9 km east from Bilisht.

The original name of the village is believed to be derived from the local Slavic name of a nearby mineral spring Smrdliva Voda meaning stinky water.

[13] The Greek government assisted a group of nomadic transhumant Aromanians, known as the Arvanitovlachs to settle in Krystallopigi.

[15] In fieldwork done by anthropologist Riki Van Boeschoten in late 1993, Krystallopigi was populated by Aromanians.