I can confirm that tehse are Murano made. I have also a collection green, red yellow peppers,aubergine and courgette.They are in teh garden of our glass museum along with lemons, oranges, and grape bunches all in glass.
I don't know who made them, but late '90's is my guess.
However there were some smashing giant ones British studio made at the Broadfield House Mueum for sale last August at the Biennale!
Makers name please someone?