Not Ysart ... Murano.
The central cane does have the same basic structure and colour as some seen in Paul Ysart pieces, although the PY version tends to have shorter arms in the star and the ends are more rounded. This type of simple cane can be found in many weights from many places around the world.
The copper aventurine, and the way it is set, is very typical of Murano work. As far as I know, this was never used in this way in any Ysart items. And the setting of the canes is also a feature of many Murano pieces, with even less evenness than in some Vasart weights!