The Silver Ring is an accessory found in Castlevania: Symphony of the Night. It has no other function except than to have access to the Castle Center when it is equipped in conjunction with the Gold Ring while Alucard is in the clock room located in the Marble Gallery.
Its inscription says: "...In...Tower", and the inscription on the Gold Ring says: "Wear...Clock...". These inscriptions are a hint to wear both of them in the clock room, where Alucard first met Maria, and complete the whole phrase:
"Wear in clock tower"
|Item Data: Silver Ring|
|Image||Name - Game|
|Type / Users||Attributes / Consume||Statistics / Sell||Found||Notes|
|Inscription "...In...Tower."|| Other (Ring)|
| Find: Royal Chapel|| Effect: Opens Clock Room door with Gold Ring|
|If you can beat him [Hipogryph], Alucard will win the Silver Ring and proceed to the next level.|| Item (Ring)|
| Find: 2. Royal Chapel|
| Effect: None|
|Inscription: ...in...Tower.|| Relic (Ring)|
| Find: Royal Chapel|| Special: Needed with the Gold Ring to get the Holy Glasses.|