Unusual cased broken glass vase

I've had this vase quite a few years, and I'd really love to try an get some ID on it.

It's 13cm high, and weighs in at a whopping 1400g. The way it's been made is very interesting- a piece of thin white blown glass, with a yellow, orange and aubergine pattern has been broken into large pieces, which have then been embedded into thick clear glass over an opaque yellow glass core, giving the impression of them 'floating'. It has a fire-polished rim and a ground base, but the pontil is left rough.
At a stab I'd say it's 1960's, but further than that I'm at a loss. Maybe Murano? Any info gratefully received! ^_^

Generally speaking a rough unfinished pontil isn't the sign of a quality glassworks and I'd say no to it being from any of the Murano glass makers. Other than that I can't help - it's not something I recognise. Datewise: stylistically it screams 80s to me...

It might be a piece from a small studio. Is the base ground at all?

Oh, it's been a while, sorry about that, had trouble with my computer.

@Pip- Yes, the quality of it isn't great, and 1980's might well be right. Still, I guess being 2009, a lot of 80's stuff has passed into the 'vintage' category. XD

@Christine- Yes, the base has been ground, but not polished, and the pontil is still rough.

Thanks for the help so far, guys! ^_^