Crystal Ball of True Seeing

Wondrous item, major, legendary (requires attunement)

• Weight: 3.0 lbs.

This crystal ball is about 6 inches in diameter. While touching it, you can cast the scrying spell (save DC 17) with it.

While scrying with the crystal ball, you have truesight with a radius of 120 feet centered on the spell’s sensor.

Source: Dungeon Master’s Guide p. 159