Featured Beautiful Old Necklace With "R" In Square

I got this necklace out of a large lot of older jewelry.Has stones mixed colors,not sure what stones are.measures 12" double.There's a "R" in a square,any idea who the maker is.I've googled old jewelry marks but couldn't find any information.

 

Pretty necklace, but not antique.

I found this information on the R mark:

"R — used by many companies with different style lettering, inside shapes, etc.
Some of the companies were:

• Royalty Jewelry MFG of NY — 1955
• Reich Jewelry — 1956
• O.M. Resen –1932
• Reeves MFG Corp. of NY — 1961"

https://www.costumejewelrycollector...e-jewelry-history-companies-and-signatures-9/

Maybe one of our costume joolies can give you a more precise ID.

 

???????
https://community.ebay.com/t5/Jewel...p/R-in-a-square-mark-early-Coro/td-p/24726763

I doubt

 

So do I.
That particular mark has R in a square cartouche as well as Coro (script).

 

Thank you,I went through the pages of "R" in shapes found nothing.

 

Thanks

 

Thanks