Why not create a bulb that is cool and elegant, without a shadow or other decorations? Plume created this urban chic pears not only environmentally friendly, energy efficient, but also looks good and you can use them without shades. The bulb looks like they moved to deliver an almost liquid index of an optical illusion. Plume bulbs last 8 times longer and use energy 80 percent less than their peers, and they seem pretty amazing to do so. They are available directly from the Pen of $ 120 for a set of four, which - if you do the math - might as well be a set of 32.