This is a positively gorgeous Tacori pin slider pendant. So very well made with CZ's encrusted in a flower design. I read Tacori started in the 1980s and sold on QVC. This piece has such quality. It is marked Tacori IV CZ 925 China. It has a two loop slider bail as well as a pin back.
It measures 1 inch in diameter.
It is in excellent condition and stunning in person. I took a picture of the front in outside light but still haven't entirely captured the beauty.