Obsidian Ring of the Zodiac

Obsidian Ring of the Zodiac is a legendary item (Ring) in Diablo III. Power: Reduce the remaining cooldown of one of your skills by 1 second when you hit with a resource-spending attack.

Normal, ancient and primal

Ancient items roll higher values; primal ones have every value at the top of the ancient range.

Normal	Ancient	Primal
Reduces cooldown of all skills by 5–8%.	Reduces cooldown of all skills by 5–8%.	Reduces cooldown of all skills by 8%.
Attack Speed Increased by 5–7%	Attack Speed Increased by 5–7%	Attack Speed Increased by 7%
Critical Hit Chance Increased by 4.5–6%	Critical Hit Chance Increased by 4.5–6%	Critical Hit Chance Increased by 6%
Reduces all resource costs by 5–8%.	Reduces all resource costs by 5–8%.	Reduces all resource costs by 8%.
Reduce the remaining cooldown of one of your skills by 1 second when you hit with a resource-spending attack.	Reduce the remaining cooldown of one of your skills by 1 second when you hit with a resource-spending attack.	Reduce the remaining cooldown of one of your skills by 1 second when you hit with a resource-spending attack.

Sources

Where	Details
Kadala	Mystery Ring · 50 Blood Shards
Salvage	Forgotten Soul
Drops	drops in the world (normal frequency)

From Kadalacalculated

Share of this item among the legendary items of its type that drop for the class, and the Blood Shards you spend on average (calculated from price, a 10% legendary chance and the share).

Class	Items of type	Share	Avg. Blood Shards
Barbarian	24	4.3 %	11,750
Crusader	23	4.4 %	11,375
Demon Hunter	24	4.2 %	11,875
Monk	23	4.4 %	11,375
Necromancer	25	4.1 %	12,250
Witch Doctor	26	3.9 %	12,875
Wizard	25	4 %	12,375