Shade: 18" X 18" X 10", Off White Man-Made Linen outside and White Man-Made Silk inside, Round. 3 Way, 150 Watt Max, Type A Bulb, 8" Gold Harp, Turnkey. Disclaimer: Selenite is a natural crystalline material with wide decorative appeal. By its sheer nature, imperfections such as other mineral deposits, which may appear as colored sections or varying crystalline structure, are not only expected, but indeed add to the beauty of the piece. The softness of selenite may result in separation of sections of crystal, which can be reattached with the use of a clear adhesive.