Yes, Beola Bianco Gneiss can be used outdoors. It is a durable and weather-resistant stone commonly used for outdoor applications such as paving, landscaping, and cladding. Its natural resistance to freeze-thaw cycles, UV rays, and wear makes it suitable for various outdoor projects. However, it is always recommended to consult with a professional stone supplier or contractor to ensure the specific qualities and finishing of the stone are appropriate for your intended outdoor use.