Thank you for viewing! Larvikite Inner diameter: 16cm Over 8mm Larvikite is a natural stone that exhibits a beautiful blue or white schiller (sheen) on a gray background. It is named after the Larvik region of Norway, where it is mined. Mineralogically, it belongs to the feldspar group of igneous rocks and is also known as the high-grade stone "Blue Pearl," used in building materials, accessories, and more.