Friend has vase in similar colours bigger, quite large but again a sort of bulbous body and then neck similar ish. But it was that beautiful coloration and the spots (though the spots/cloudiness on hers is different to yours iirc, that colour mix is the same and just incredible greys and lilacs) that reminded me of hers. Just checked and hers is signed Adam Turnmill 1986. So Adam Aaronson - so am thinking yours reads Adam 93 ( I now think it reads 93).
btw I covet her vase - it's the most beautiful piece of glass and I want it but she's not parting company with it. I covet your vase as well. I love that lilacy colour mix. Just gorgeous.