Lapis is a mixture of at least three minerals: lazurite, calcite & pyrite. Ground lapis was the secret of the blue in ultramarine, the pigment which painters used to paint the sea and the sky until the nineteenth century. It was said to impart ancient knowledge, and the wisdom to use it and to enhance one's awareness, insight and intellect. Beautiful and useful too! Pendulums are used much the same way as applied kinesiology or muscle testing to help determine the answer to a question. Pendulum chain not shown in photo.