The Onion design was used as an oil or candle lamp in ship's passageways and holds. The Mini Onion sends light all around and down to light steps, walks and landscape. The optional optic glass (as shown) sends light out in elegant stripes. Seeded glass which diffuses the light is also available. Go to About Glass at the top of the page for more glass info. For help call us at 800-606-1612.