Blue Tearstone Ring

deThe Blue Tearstone Ring is a combat-oriented ring in Dark Souls.

In-Game Description
The rare gem called tearstone has the uncanny ability to sense imminent death.

This blue tearstone from Catarina boosts the defence of its wearer when in danger.

Effect
Boosts defence by 50% when the wearer has less than 20% health remaining.

Availability
The Blue Tearstone Ring is found in the Undead Burg, to the right and downward from the three hollow soldiers before the Taurus Demon. It is guarded by a Sword Black Knight.

Overview
Similar in effects to the Dull Rat's Ring from Demons' Souls, the Blue Tearstone Ring is similarly rarely used, due to its limited usefulness (only activating near death, and also the risk involved in activating it since at such low hp players are liably to die very quickly anyway) and the presence of other, more useful rings out there.