In Islam, agates are deemed to be very precious stones. According to tradition, the wearer of an agate ring, for example, is believed to be protected from various mishaps and will enjoy longevity, among other benefits. In other traditions agate is believed to cure the stings of scorpions and the bites of snakes, soothe the mind, prevent contagion, still thunder and lightning, promote eloquence, secure the favour of the powerful, and bring victory over enemies. Persian magi are also known to have prized agate rings in their work and beliefs.*

* From Wikipedia, the free encyclopedia:

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