Emerald is a good stone for preventing decay, promotes childbirth, arrests dysentery, and heals bites from venomous animals. It is also good for eye diseases; a traditional eyewash is manufactured by steeping an emerald in water, and for general healing. Of all of the jewels, it best reflects objects like a looking glass. Nero is said to have possessed one of enormous size, through which he watched the combats of the gladiators. (see Gem Healing) A.G.H.