Yes, Italys Rittner Porphyry can be used outdoors. Rittner Porphyry is a type of natural stone that is highly durable and weather-resistant, making it suitable for various outdoor applications. It can be used for outdoor flooring, cladding, paving, landscaping, and other hardscaping projects. Its natural beauty, durability, and resistance to freezing and thawing cycles make it a popular choice for outdoor spaces such as patios, driveways, walkways, and pool decks.