Weight: 3 lb.
Estimated Value (Sane Cost Guide): 8,000 gp
DMG Value: 501 gp - 5,000 gp
While this bowl is filled with water, you can use an action to speak the bowl’s command word and summon a water elemental, as if you had cast the conjure elemental spell. The bowl can't be used this way again until the next dawn. The bowl is about 1 foot in diameter and half as deep. It weighs 3 pounds and holds about 3 gallons.
Source: DMG p156