Displaying a mesmerizing schiller effect, an iridescent play of blue or silvery light that shimmers across its surface, Larvikite is an igneous rock, specifically a variety of monzonite, rather than a single mineral. Its name originates from the Larvik region in Norway, which is the primary source of this distinctive stone. Often referred to as "Norwegian Moonstone" or "Blue Pearl Granite" (though it is not a granite or moonstone), Larvikite's captivating iridescence is caused by the presence of microscopic plagioclase feldspar crystals within its structure that reflect light. While the dominant color is typically a dark gray or black, the flashes of blue, silver, and sometimes even green or purple give it a unique and alluring appearance. While Norway remains the primary source, similar rocks with schiller effects can be found in smaller quantities in other parts of the world. Being an igneous rock composed of several minerals, Larvikite is relatively hard and durable, suitable for various applications. Its hardness is comparable to granite, generally ranging from 6 to 6.5 on the Mohs scale. Its luster is typically sub-vitreous to dull, depending on the polish and the orientation of the schiller-producing crystals. While not a traditional gemstone with a long history of use in jewelry, Larvikite has been appreciated for its beauty and used in architectural applications and ornamental objects for centuries in Norway. Its increasing popularity in jewelry is a more recent trend, driven by its unique visual appeal. Symbolically, as a stone of grounding and connection to the earth, Larvikite is often associated with inner strength, perseverance, and adaptability. Some believe it enhances intuition and psychic abilities. Caring for Larvikite is relatively simple due to its durability.