However, I think i get the gist of what you're saying.
And it all depends, quality is quality, it has no boundaries. So without seeing this item, or a description of it, it's basically anyone's guess.
Some info on Korean jewelry will be of interest here..
articles of jewelry made in Korea go back to ancient times, when the art of working gold, including the techniques of granulated gold and filigree work had been learned from the Chinese.
Be careful of Korean Jade, a misnomer - for Bowenite, a green variety of Serpentine.