All replies and the OP so far seem to assume the chandelier was built for 220V. But, is there any chance this is a period piece?
Up to the 1960s (and even the early 1970s) many countries in the Mediterranean region used 230V triphase AC. This is about 120V for each individual phase, and 230V between phases. So you could wire a house using two phases to obtain 220-230V at the wall outlets for appliances, and the third phase for 120V for lighting. 120V bulbs were actually quite common in these countries.
I am starting to think you may have a chandelier wired to accept 120V bulbs, under 230V voltage; i.e. each two bulbs are placed in series.
If there is any chance the wiring is old and deteriorated by time (humidity?), I would have it remade with new material by a licensed electrician - making sure all your bulbs are connected in parallel.