Can I use a cone shade for the ceiling?
You can use a 
Wide Cone Shade for the ceiling as long as it has a 
pendant fitting. The Product information will tell you whether the shade is designed to fit a pendant light (with bulb pointing down) or for a lamp base (bulb pointing up).
The 
French cone candle clip shades are designed to fit our wall lights and multi-armed pendants where the 
bulbs point up and will only fit on top of a candle bulb. For more information, see our 
Shade Orientation Guide.