Stoneskin(Player's Handbook v.3.5, p. 284)
Level: Trapsmith 2, Urban Adept 4, Spellthief 4, Bladesinger 4, Death Master 4, Sha'ir 4, Wu Jen 4 (Earth), Runescarred Berserker 4, Fatemaker 4, Adept 4, Wizard 4, Sorcerer 4, Disciple of Thrym 5, Urban Druid 5, Druid 5, Shugenja 6 (Earth), Endurance (BoED) 5, Earth 6, Strength 6, Dragon (SpC) 6, Dragon (Dr) 6,
Components: V, S, M,
Casting Time: 1 standard action
Target: Creature touched
Duration: 10 min./level or until discharged
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)
The warded creature gains resistance to blows, cuts, stabs, and slashes. The subject gains damage reduction 10/adamantine. (It ignores the first 10 points of damage each time it takes damage from a weapon, though an adamantine weapon bypasses the reduction). Once the spell has prevented a total of 10 points of damage per caster level (maximum 150 points), it is discharged.
Material Component: Granite and 250 gp worth of diamond dust sprinkled on the target's skin.