Very old and tiny kerosene oil lamp or chandelier insert. Thick glass irregular in shape with a blue tinge and lots of bubbles, probably hand blown into a mold as it does have side seams. Burner reads V. C. Co. with five stars. Impressed in the glass is "Use Kerosene". 2 3/4 inches tall to top, 1 5/8 inches diameter - irregular in shape. About 2 1/8 inches across at widest point. Wick riser screw functions. Blue shows as more intense in photographs.