Yes, Italys Sankt Jacob Quartzite can be used in landscaping. Quartzite is a durable and versatile natural stone that features an attractive range of colors and patterns, making it suitable for various landscape design purposes. It can be used for pathways, patios, retaining walls, decorative rock features, outdoor kitchens, water features, and more. Its strength and resistance to weathering make it a popular choice for outdoor applications in landscaping projects. However, it is always recommended to consult with a professional designer or landscape architect to determine the best materials for your specific landscaping needs.