We love this light and it was easy to assemble.  However, the other night the glass ball hanging in the center crashed down onto the table shattering a decorative glass bowl that was underneath.  Glass went everywhere.  lucky for us we were sleeping when it happened. 
 Upon inspection, the glass ball, which is solid,  is not fastened on with a screw,  it is glued onto the stem in the center.  The ball itself is not damaged.  This is a serious safety issue.  Can you image this happening while everyone is sitting at the table?  I don't know what to do, glue it back on with stronger glue or return the lamp.  This is why my rating is so low.