Vintage to antique victorian -esque necklace, silvertone rhinestone

This is an estate find.
When I found it, it had most of its original chain, but when I tried to repair it, the chain just pretty much disintegrated.
So, I added this replacement chain. The current length is 22 inches, whereas originally it was probably more of a choker length-maybe 15 to 17 inches. The remaining pieces seem solid, albeit aged. The replacement chain is obviously modern. It is actually brand new. It is sterling silver, however, do it will soon tarnish, and take on a more age-appropriate patina.
If you want it shortened, let me know prior to shipping. I like it this length, for layering, but it ended up this length primarily because that is how much of that style of chain I had.
There is a nearly new sterling silver clasp added also.
The remaining original parts seem pretty solid. See photos for details.
Unknown original designer. Google lens was baffled.