A pendulum has many uses: medical (in psionic medicine); to extract or channel energies within our body; to find water, objects or persons; to make predictions; to measure time or gravity...
Merkaba. Possibly a Pythagorean symbol. It's name means «carriage» in Hebrew. It is an eight- pointed star, formed by two joining pyramids. It is a three-dimensional David's star.
Its name comes from Latin "Oculus Tigris", because of its similarity to the eye of a tiger. The Tiger's Eye is a yellow and golden brown coloured Quartz variety, with iridescent reflections. It is considered a semiprecious stone. It is known as the Freedom stone. It favours changes. Attracts good luck, and it's used against the Evil Eye. It is an organism cleaner, providing inner strength. It it suitable for introverted people, or for those who need new experiences.