"Herodian lamps were made on a potter's wheel, so with careful inspection one can usually see circular striations in the clay. The potter obliterated most of the striations when he rubbed the bottom and sides of the lamp to burnish it and close the pores. However, the potter could not burnish the interior of the lamp, so a spiral design can often be seen in the floor of the lamp as viewed through the filling hole. More minute circular striations can be found on the shoulders and on the rim and ledge around the filling hole of Herodian lamps."
"Nautical archaeologist Shelley Wachsmann found a Herodian oil lamp in association with the 1st century Sea of Galilee fishing boat that he excavated in 1986. Negev and Gibson remark, "This find is important because it indicates that clay lamps were a part of working on the Sea of Galilee. It further suggests that fishermen had worked in the early morning and in the evenings when lighting would have been necessary." See Matthew 5:4-5 and John 21:3 for gospel accounts of night fishing." -- Holyland Oil Lamps
