... Hi, this is just an opinion, however it reminds me very much of the works by John Rocha for Waterford Crystal. It could also be a Preciosa piece, Czech Republic. It certainly appears to be a quality lead crystal. Would you say that it is very heavy in relation to its size? This would also indicate a factory of quality. Check also the cuts into the glass. These should be uniform whilst also displaying slight, subtle differencies if the piece has been wheel cut by hand.