Gem of seeing
(Dungeon Master's Guide v.3.5, page 257)
Price (Item Level): 75,000 gp (19th)
Body Slot: —
Caster Level: 10th
Aura: Moderate; (DC 20) divination
Activation: —
Weight: —
This finely cut and polished stone is indistinguishable from an ordinary jewel in appearance.
When it is gazed through, a gem of seeing enables the user to see as though she were affected by the true seeing spell. A gem of seeing can be used for as much as 30 minutes a day, divided up into periods of minutes or rounds as the user sees fit.
Prerequisites: Craft Wondrous Item, true seeing.
Cost to Create: 37,500 gp, 3000 XP, 75 days.