The blue one remains a mystery...
... no longer. This item is marked for the Melting Pot Glass Studio in Margaret River, Western Australia. This business was operated 1991-96 by artists Gerry Reilly and Kent Le Grand. From 1996 until today it has been the studio of Gerry Reilly. It has a
website and a
Facebook page.
The paperweight in the photos dates from about the same time and is signed for the studio, but it is somewhat different in style with its clear casing. The bottle in the third photo is signed by Gerry Reilly himself although it is more of a kind with the surface treatment of your paperweight. The rough ground out pontil scar (seen in the photo of the base of my paperweight and in the OP's) is also characteristic of the Western Australian glass artists of this time.
I note that this solution is provided 7 years and 105 days after the original question was asked. That is not my record, which remains the one I answered
here at 7 years and 115 days after the question. (Yes, I was tempted to hold out for 11 days before answering, but that would have been in poor spirit.) My fastest answer is 4 minutes and 52 seconds
here.
Trevor