Bogoff Vintage Dark Blue Rhinestone Leaf Cascade Necklace

This is an absolutely stunning vintage necklace made and signed by Bogoff. I believe this necklace has been modified or perhaps repaired at some point and it is in need of some minor soldering now. On the leaf cascade at the bottom, it looks like 1 stone was replaced with one that is not exactly the same shade of blue. There also appears to be broken soldering on the last leaf of one of the cascades so that it wobbles back and forth. There are also a few stones missing -1 blue and a couple of clear ones- all located on the chain part. I can not find this particular necklace anywhere but I have found the necklace part and some earrings that look like the cascade part so I wonder if perhaps someone pieced this necklace together? I am not sure of that but it could be. The cascade doesn't feel extremely secure on the chain. This necklace is so beautiful but could really use some touch ups on the soldering to make it more secure. It is 15" in length. (Bin#MU6)