For topaz, it is generally easy to identify because of its dark color. As long as you see an aquamarine in the market, it's all dark and cut. If it is really aquamarine, it is very worth collecting, but if its price is not so high, we should pay attention to whether it is transformed from topaz. One more thing, aquamarine and topaz are placed in a dark place at the same time, and aquamarine will be brighter than topaz. But this is not absolute, it depends on your own work, so it can't be used as the only appraisal method. In order to ensure that you can buy the most natural aquamarine, it is recommended to rely on the gemstone appraisal book. I can look at Jinglongfu's website, where I learned about these things.