In hindsight it's visible in the pictures but there's no difuser at the top of these lights. They also take Candle Bulbs (E14 Small Edison Screw) which doesn't appear to be mentioned on the product page (we'd assumed they'd take GU10 type bulbs).

Saying that, they're suitably sturdy build, have a good weight to them, but I suspect for most people they'll be sitting behind something...