Clay Bracelet

"The clay bracelet is a wonderful piece of jewelry to wear on your wrist. It provides fine protection, enhances your resistance to magic, and lets you call forth a mystic eye to help you in your travels." - Joyce

OK, so maybe the stats aren't that great, but it does have unlimited charges of Eye of Zomm which is pretty handy.

Clay Bracelet
MAGIC ITEM LORE ITEM NO TRADE
Slot: WRIST
Charges: Unlimited
AC: 4
SV MAGIC: +5
Effect: Eye of Zomm (Any Slot/Can Equip, Casting Time: Instant) at Level 20
WT: 1.0 Size: SMALL
Class: MAG
Race: HUM ERU HIE DEF GNM DRK
Slot 1, Type 7 (General: Group)

Joyce is a gnome magician in the Temple of Solusek Ro off Lavastorm Mountains. She will make you a clay bracelet if you bring her four runes of clay.

Find the gnome necromancers Bindlegrob, Sindlegrob and Findlegrob in the Rathe Mountains. Loot "Rune of Clay" off each of them (they each have a separate pieces which identify as right, left and top.) Two of them can be found in a tower of undead near the Swamp entrance (left at first four-way intersection). The third is found at another undead tower near the Lake entrance on the opposite side of the valley. Then kill the goblin headmaster in the Ocean of Tears (loc +2430, -5780) for the bottom piece. Return them to Joyce for your bracelet.