What are the taboos of Moyu?

Bump, oil, high temperature. The taboo of black jade is:

1, avoid bumping: Mo jade has high hardness, but it is as fragile as other jade. In normal times, it is best not to let it linger with hard objects, let alone squeeze it hard. Try to take it off during exercise or manual labor to avoid cracking.

2, avoid oil maintenance: jet is very oily, usually it is best not to maintain for a long time, otherwise it is easy to cause depression. After a long time, the surface gloss will become dim, mainly because it is in contact with human skin, so the patina formed will be more beautiful.

3. Avoid high temperature: jet is a naturally occurring crystalline ore. In the process of long-term wearing, it is best not to touch high temperature environment, let alone bake directly on an open flame. It can be placed in a cool place in hot weather to avoid cracking.