Skull Gem

Skull gems were one of the seven types of * gems found in Diablo II. Skull gems do not return in Diablo III, though the other six types of gems, Rubies, Sapphires, Topazes, Diamonds, Emeralds, and Sapphires, do.

There are many more quality levels of gems, and all gems have different stats in Diablo III than they did in Diablo II, though.

Skull Gems in Diablo II

Skull gems provided the following bonuses in Diablo II Classic:

Quality		Weapon	Helm or Armor	Shield	Sell Price	Clvl Req
Chipped		Steals 2% life and 1% mana per hit	+2 Replenish life and +9% mana regeneration rate.	Attacker takes damage of 2	250	1
Flawed		Steals 2% life and 2% mana per hit	+3 Replenish life and +8% mana regeneration rate.	Attacker takes damage of 3	750	5
Normal		Steals 3% life and 2% mana per hit	+3 Replenish life and +12% mana regeneration rate.	Attacker takes damage of 4	2500	12
Flawless		Steals 3% life and 3% mana per hit	+4 Replenish life +4 and +12% mana regeneration rate.	Attacker takes damage of 5	7500	15
Perfect		Steals 4% life and 3% mana per hit	+5 Replenish life +5 and +19% mana regeneration rate.	Attacker takes damage of 6-7	25000	18

Skull gems had slightly different stats in the Diablo II Expansion:

Quality		Weapon	Helm or Armor	Shield	Clvl Req
Chipped		Steals 2% life and 1% mana per hit	Replenish life +2 and mana regen. 8%	Attacker takes damage of 4	1
Flawed		Steals 2% life and 2% mana per hit	Replenish life +3 and mana regen. 8%	Attacker takes damage of 8	5
Normal		Steals 3% life and 2% mana per hit	Replenish life +3 and mana regen. 12%	Attacker takes damage of 12	12
Flawless		Steals 3% life and 3% mana per hit	Replenish life +4 and mana regen. 12%	Attacker takes damage of 16	15
Perfect		Steals 4% life and 3% mana per hit	Replenish life +5 and mana regen 19%	Attacker takes damage of 20	18