Id say its good. If u can see tool marks In the design its definitely good. If it was carved, then plated, the low points would be smooth.
Get it checked.
I agree with Hannibal, I think the A looks more like an arrow or pyramid, the GD20 as a makers mark. The 14K is the purity.
Looks like a nice gold ring.
Awesome, thanks for all your responses. Super stoked this is real. What was throwing me off was how light it is, probably a product of how small and thin it is.