Lapis Lazuli is a powerful throat chakra opening stone. It emphasizes the power and importance of the spoken word. Also a third eye chakra stone helping to bridge the physical and spiritual dimensions making it beneficial for spiritual development and dream work. Lapis Lazuli is compromised of Lazurite, White Calcite and Pyrite. I absolutely love when I can easily see all three as is visible y this piece. This piece has beautifully prominent Pyrite bands and weights 9.5 ounces and measures 2.75 x 2.75 x 1.25 inches.