A few vintage brooches to ID

[rednarlenes]

Hello! - The top brooch with the green stone I have no idea. The one on the right looks like unmarked Weiss? What is the middle stone - maybe an agate? The left one I'm guessing is European. Have another with similar construction marked Austria. Any help much appreciated.

[liwa-5159]

I think the striped stone is called a porphyr stone. 

[sell_mortimer_sell]

they are all glass.

[evelyb30]

BTW - there is no such thing as unmarked Weiss. Weiss was a badger; they made nothing of their own, and hired other companies (subcontractors/jobbers) to make everything and attach the Weiss "badge".    It may be made by one of their subcontractors, but working for someone else. 

[rednarlenes]

Thank you, I saw that in a title.  Not experienced in jewelry, have a few pieces hanging around to sell.