1. Brands can be exchanged. The exclusive gem of jewelry, longan stone, was exchanged by Dalaran jeweler's coins. Get Titan iron powder for daily use or decompose Titan iron ore, and exchange 10 for a coin.

2. Gems play monsters and decompose ores (mineral processing). Mining also has opportunities. Mainly mineral processing products.

3. Mineral processing is inevitable, because you need to practice jewelry skills. Stones are cheap in the early stage of cutting. It should be uneconomical.