There is limited information available specifically about China Crystal Onyx Glassy Marble, as it seems to be a specific type of marble sourced from China. However, marble, in general, is not recommended for exterior applications in cold climates.

Marble is a natural stone with a porous structure, making it susceptible to damage from freeze-thaw cycles. In cold climates, moisture can seep into the pores of the marble and freeze, expanding and causing cracks and other forms of damage. This process can deteriorate the marble over time.

For exterior applications in cold climates, it is recommended to use materials that are more resistant to freeze-thaw cycles, such as granite or certain types of engineered stone. These materials are less porous and can better withstand the harsh conditions.

It is important to consult with professionals who have knowledge and experience specific to the type of marble you are considering and the extreme weather conditions of the intended location. They can provide more accurate and detailed advice based on your specific circumstances.