Golembane scarab
(Dungeon Master's Guide v.3.5, page 266)
Price (Item Level): 2,500 gp (7th)
Body Slot: Throat
Caster Level: 8th
Aura: Moderate; (DC 19) divination
Activation: Standard (command)
Weight: —
This beetle-shaped pin enables its wearer to detect any golem within 60 feet, although he must concentrate (a standard action) in order for the detection to take place. A scarab enables its possessor to combat golems with weapons, unarmed attacks, or natural weapons as if those golems had no damage reduction.
Prerequisites: Craft Wondrous Item, detect magic, creator must be at least 10th level.
Cost to Create: 1,000 gp (plus 500 gp for base item), 80 XP, 2 days.