Silver Boxed Cubic Zirconia Pendant & Earrings

Excellent condition! Pendant box is 5/16" square; stone is 2ct. 30" chain - kind of long for the size of the pendant, so I double stranded it around my neck. I'm only guessing it might be 925 Silver because it has never tarnished in the year+ I have had it. Earrings are 1/2" asymmetrical square; 2ct stone each.