Heart Pendant 925 signed,prong-set stones

I have had this for a long time. It came from a local estate. I cannot get the sterling pendant off the chain,It is fastened strangely. The chain is just going for the ride! The dark stones are all prong set. The heart says: 925 on backside ,also a few letters I cannot make out.

Francois Multi Strand 22k Gold Plated Neckace

The Francois Multi Strand 22k Gold Plated Necklace is a stunning piece of vintage and antique jewelry. With a necklace length of 12 inches, this necklace features multiple strands of gold plating, creating a luxurious and elegant look. The Francois brand brings a touch of sophistication and style to any outfit, making it a perfect accessory for any occasion.