585 Zijin is gold with a purity of 58.5%, namely 14k gold. It is the most European-style gold jewelry and worth buying. However, whether it is worthwhile to spend 3000 yuan on 585 Zijin depends on your personal preference and budget. If you like this kind of jewelry and have enough budget, then this purchase may be worthwhile. However, if you are not particularly interested in this kind of jewelry, or your budget is tight, then this purchase may not be the best choice.

In a word, buying jewelry is a personal decision, which needs to be considered according to your own preferences, budget and long-term investment plan.