This singing bowl is a special bowl, which is made of seven metals, i.e. gold, silver, copper, iron, tin, lead, and zinc. All the metal used has a specific purpose and represent the sun and the moon and other planets. This bowl can be used for meditation, music, and chakra cleansing. A leather striker is included with this singing bowl and this bowl was hand-hammered in Nepal. This bowl is truly hand made in a traditional way at singing-bowl house . Due to handmade bowl,the surface have several marked of hammered on it.The bowl have long lasting tune which create totally peaceful environment around you . who are looking for real handmade bowl from Himalaya will not be disappointing by this bowl. About B-Chakra, B is associated with the crown chakra. Located at the top of the head, the color of this chakra is violet. Issues are related to understanding. Disharmony of this chakra manifests as psychosis, creative exhaustion, nervous tension, psychic debilitation, hyperactivity, general lowered resistance, and migraines. Emotions associated with this chakra include bliss. The function is liberation and the symbol is the lotus flower. The endocrine influence is on the pineal gland. Associated with the element of thought and the signs of Pisces and the Universe. Sugalite, fluorite, amethyst, and all violet gemstones are related to this chakra. Essential oils are sandalwood and lavender. Quality is spirituality. Vowel sound of E MEASURMENT This is handcrafted bowl therefore please note that each one might have slight variations in measurement. Diameter: 6 inch Height : 3 inch Weight : 705 gram(only bowl ) (931.5 grams with striker and cushion)