New Here and Earrings with Initials : Thanks!!

I am new on this site. These earrings have Turquoise and Lemon Quartz set in Silver. The stamped Initials on the back are a mystery to me. I have researched a lot and turned up dead ends, Help appreciated.

I’m not sure if that is actually turquoise. Do they feel especially light? If you tap on it does it seem hollow? Hopefully others will chime in… I am by no means an expert but the cutting looks off too.

You might show the initials and see if someone recognizes them.