Yes, Brazils Jeriba Blue Quartzite can be used for exterior applications in cold climates. Quartzite is a very durable and hard stone, making it suitable for outdoor use where it will be exposed to harsh weather conditions, including cold temperatures, freeze-thaw cycles, and precipitation. It has excellent resistance to frost, heat, and staining, which makes it a popular choice for outdoor applications such as paving, cladding, and landscaping. However, it is always recommended to consult with a professional or supplier who can provide specific recommendations based on the local climate and application requirements.