It's not unusual for plants, animals, and other things to have a variety of popular names. Sometimes they are mistakes, sometimes reasonable, sometimes regional..., not necessarily wrong. I've heard the "script" name, but not "grassy." I've also read another name (that I can't dredge out of my memory at the moment). In both instances, the names were for new Chinese beads made of this stone.

The beads you show are very attractive.

Cheers, Jamey