The Vatican Library Collection Rose Gold 1" cross purple stones silver 25" chain

This is a Vatican Library Collection Rose Gold 1" cross purple stones silver 25" chain that was purchased in Italy by a good friend of mine and gifted to me when they returned home. I wore it a few times and then it sat quietly in my jewelry box. See picture for more details. Chain is about 25 inches long from on end to the other. Picture show that the cross is about 1 inch. If You have any questions let me know. Note: Original box was lost during a recent move.