Bring the Brilliant Gold Ring, a Silver Bar, a Moss Agate, and 30 silver coins to Talvash del Kissel in Ironforge.
Listen <name>, that ring is yours, sure... but I can make you a better one! That design, like I said, is really simple. I am a lot more skilled now, and for the mere fee of thirty silver coins I'll spruce it up for you! Well, a little more than thirty, actually...
I'm in a tight spot right now; all my material stock is all dried up. If you bring me a bar of silver and a moss agate, I'll add a silver and agate lattice to the ring that will give it a little more pizzazz!