Hello John it weighs about the same as a normal wine glass 100 grams, i've compared it to three wine glasses two Victorian and one Edwardian about the same size and shape although the three are lead crystal, it just feels a bit different to the other Salviati glass ive got although i only have about 30 bits and most are feather weight. here are 4 to corroborate the later. Apologise for the picture quality i'm in a rush this morning.
Thanks Chris.