Question about how to shape a small piece of gold into a Scorpio sign

I am making a necklace from hemp, silk and an opal stone which is my birthstone. I am wire wrapping it with silver wire onto the hemp necklace. The Opal stone has wire on it and looks pretty but the middle is open.

What I'd like to do to it is somehow make a tiny little scorpio sign out of pure gold and stamp it into the opal.

I can't find any information on how to shape gold into something like that and I know it's really malleable.
I feel like I would only need a small amount of gold.

Does anyone know how to do this? I feel like someone on here would haha

Pics would help. Probably make the scorpio out of gold wire and braze it

You would need to make a mold and melt the gold down, then pour it into the mold.