Collectible India Brass Fancy Kerala Diya Oil Lamp for Home Temple Festival Gifts Puja Articles Decor (Size 10 Inch, Golden) Size:10 Inch   The Handmade Brass Kerala Oil Lamp is a traditional oil lamp known as a diya. Used since ancient times as a decoration and a source of light, the diya is an oil lamp that burns vegetable oil or ghee Indian butter. Once the lamp is filled, you place a cotton wick inside and light it to fill the room with light. The lamps are used as a part of Festivals, You can also use them as decorations in your home in the living room or bedroom or place them on a dining table instead of candles.