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Mosaic glass made with strips of transparent blue, yellow, orange, green and purple glass, and opaque white and yellow.

This object may have been made through the craft of weaving glass:
"Woven Glass is unique and singular in its appeal. Constructed of compatible pieces of glass, these elements are then assembled, as one would imagine a fine tapestry would be. Taking into consideration colors, thickness and texture of..."
http://ezinearticles.com/?Woven-Glass&id=1506231

"Weaving Glass
Two former scientists developed a revolutionary method for constructing glass sculptures
Read more: Weaving glass - The Scientist - Magazine of the Life"
http://www.the-scientist.com/news/display/55550/

(IMAGES):
http://www.google.co.uk/images?q=glass weaving&oe=utf-8&rls=...

A couple of minutes into this video shows an exhibition of pieces of woven glass:
http://www.wovenglass.com/HavenOpening.htm

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Note added at 21 hrs (2011-02-20 11:48:27 GMT)
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or
STAINED GLASS VASE

This could on the other hand be describing stained glass, although the use of "nastro" implies more of a sort of woven image. However:
http://www.google.co.uk/images?q=stained glass vase&oe=utf-8...

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Note added at 21 hrs (2011-02-20 12:08:20 GMT)
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More on woven glass to help you decide which:
http://www.wovenglass.com/sec_press.htm#HavenGallery