Aqua aura quartz is the end result of a process which uses intense heat to infuse 24 karat gold vapor deposits to natural quartz from Brazil. The gold atoms fuse to the crystal's surface, which gives it an iridescent metallic sheen on an aqua coloured crystal.
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 and matching stone bead end not shown in photo.