Question about symbol on earrings- Possibly Masonic?

[GeorgiaMoxie]

These earrings are from an estate sale and I'm curious to find out what this symbol is on them. It looks similar to Masonic symbols however I haven't seen anything that is a true match it so it could be something else. I have not had them appraised.

Thank you in advance!

 

[VRBeauty]

Since the symbol is on the back of the earring, it's likely a maker's mark of some sort.