Oil would have been placed in the bowl, and wicks could rest on the two cuttings in the rim. This is a good example of one of the most characteristic types of stone lamps that were made in the Neopalatial period.
From Gournia, Crete
Richter, Gisela M. A. 1953. Handbook of the Greek Collection. pp. 16, 168, pl. 8e, Cambridge, Mass.: Harvard University Press.
Warren, Peter. 1969. Minoan Stone Vases. p. 225, London: Cambridge University Press.