I have no english edition of Silmarillion, so my translation is not correct. The quote can be find on the last pages when Círdan gives Narya to Gandalf, and he says this about the ring.Edit
Here's the exact quote (thanks to ~asaph70
"thou shalt rekindle hearts to the valour of old in worldthat grows chill"
Some info to avoid misunderstanding:
-I did not bought it, it is my own work (you really think a photo of a shopped item would deserve to be featured?
-the text is hungarian, not elvish
These coins were my graduation works, and university didn't preferred using foreign language.