Price (Item Level): 300 gp (2nd) (least), 900 gp (4th) (lesser), or 2,700 gp (7th) (greater)
Body Slot: — (armor crystal)
Caster Level: 7th
Aura: Moderate; (DC 18) conjuration
Activation: —; see text
Weight: —
This dull red crystal pulses in time with your heartbeat.
A crystal of stamina protects you from assaults against your physical health.
Least: This augment crystal grants you a +1 competence bonus on saving throws against disease and poison.
Lesser: As the least crystal, except the bonus is +3.
Greater: As the least crystal, except the bonus is +5. In addition, if you fail a save against a poison or disease effect, you can choose to reroll the save as an immediate (mental) action. This ability functions once per day.
Prerequisites: Craft Magic Arms and Armor, neutralize poison, remove disease.
Cost to Create: 150 gp, 12 XP, 1 day (least); 450 gp, 36 XP, 1 day (lesser); 1,350 gp, 108 XP, 3 days (greater).
Source: Magic Item Compendium, page 26.