Han Hye-jin's ring keeps catching my eye. Does anyone know where it's from?

When I look at Han Hye-jin's styling these days,

it's generally clean, but the way she adds a single accent piece is so pretty.

This ring has exactly that vibe,

so I keep looking at it and it makes me want to buy it for no reason...

It doesn't look too flashy, so it seems perfect for daily wear,

and since it seems like a style that would go well with anything, I'm even more curious.

I'm trying to find something similar, but it's not easy because the vibe is different.

Does anyone happen to know the brand?

Please share the information.