What Makes Imperial Jasper Jewelry So Special? Explore the sublime appeal of Sagacia's Imperial Jasper jewelry. Each Imperial Jasper jewelry piece, stunning in itself, is crafted out of pure 925 sterling silver that is hypoallergenic in nature and is plated with rhodium. The imperial jasper gemstone used in this jewelry possesses beautiful intricate patterns and granular texture. This gemstone is well-known within the spiritual community for its stabilizing and grounding effects, and this semi-precious stone also offers protection and tranquility to the user.