Our Singing bowls include a wood and suede mallet. Hand hammered singing bowl sizes will vary, as some of them are thicker, some are thinner. The size and weight given here is an average. SYMBOL: Singing Bowls are one of the ancient Tibetan meditation tools. The pure sound produced when the rim is rubbed by the mallet is said to put the brain into a meditative state. The vibrations of the singing bowls have the same wave length found in the brain waves that produce feelings of relaxation. This bowl is made from a combination of 7 metals consisting of old, Silver, Copper, Iron, Tin, Lead and Mercury and one interesting thing is that each of the metals denotes the planets: Gold: the Sun, Silver: the Moon, Mercury: Mercury, Copper: Venus, Iron: Mars, Tin: Jupiter and Lead: Saturn. The Sri Yantra is a meditation diagram. It serves as a support for meditation and helps to bring the practitioner to a feeling of both detachment from material things and union with the Divine.