1. Diamonds are worth collecting only if they are larger than 1 carat and have good color and clarity. Little poor is worthless.

2. The appreciation of diamonds is slow and the relative value is relatively stable, which is not suitable for the proportion of investment income.

3. Diamonds can be opened at any time, and the market is stable.

4, antique calligraphy and painting water is deep, and the collection risk is great.

5. Antiques, calligraphy and painting are high-yield and high-risk, and their prices will rise substantially.