There's a lot of places that sell jewelry stones. EBay, Etsy, Mr.
Stones, Jan's Jewels for starters. There's a rhinestone guy too....think
that's his website. A google image search may be what you need, BUT if
you could post pictures of what you want...
I did find a similar one on Ebay....my phone wouldn't let me log
in...but they didn't have a brand listed either, I think they called it
molded glass. Here's the Ebay Item #..... 275569893904 unbranded pink AB
Art Glass molded petals brooch. Hope tha...
Definitely not Juliana. They "pool" their soldering together which is
very visible in the back of the brooch. This may just be a nice unmarked
brooch that you may never learn the maker of. It is beautiful though!
I would probably call that an orchid or an Iris. You picture of the
signature is not very large or clear. Could you zoom in on the signature
ONLY with a magnifying app? That may help.