Lava Coaster is made of a specially selected volcanic rock, Lava stone. Volcanic rock has been around for billions of years, it has been known as a grounding stone that can balance emotions and bring about calmness and strength. It is formed when molten rock erupts onto the Earth’s surface, cools, and solidifies almost instantly when it is exposed to the cool temperature of the atmosphere. Due to weathering and erosion at the earth’s surface, each rock was tempered into stones with distinctive shapes, and became the so-called “Lava Stone”.