It has gold inclusions (I think that's the right term) inside the glass. It also has a Millenium Falcon shape.
Perhaps a shell shape then? I like the way the wavy pattern is formed.
Is it made by Fratelli Toso? It's a lovely piece and I only paid £2.50 for it after being reduced for clearance.
It's just over 7 inches long.http://glassgallery.yobunny.org.uk/displayimage.php?pos=-4758