Silverlight

Silverlight is a magical sword used in the Demon Slayer quest, and can be kept afterwards. The sword is obtained by talking to Sir Prysin in Varrock Castle during the course of Demon Slayer. He will send the player on a mini-quest to obtain the 3 keys to the box that Silverlight is held in - once the player acquires these keys and brings them back to Sir Prysin he will give the player the sword. This weapon cannot be made by players.

Silverlight is dyed black during the course of the Shadow of the Storm quest, and later becomes Darklight. Both Silverlight and Darklight can be mounted on the wall inside of a player's home if he or she has a Quest Hall.

Silverlight is equal to the steel longsword in terms of statistics and when fighting non-demon monsters. However, while fighting Lesser, Greater, Black or Abyssal Demons, Silverlight becomes as powerful as a Rune longsword. Silverlight is the strongest weapon available to a defence pure with only 1 attack.

In RuneScape Classic, Silverlight will weaken a demon if it is used on the first hit.

Note: If player dies, Silverlight is lost and can be returned from Sir Prysin for free until the quest is complete. Afterwards, a player must buy it from him for 500 coins after losing it. But, a player could drop Silverlight, get another for free, drop that, get another and so on. After the fourth of fifth Silverlight they would start to disappear. Then the player would pick them all up, then note then in a bank and go back for more but still dropping them all that are now in note form. Silverlight can be sold to the Wise Old Man for 80 coins.

Silverlight was formerly sold in the Legends' Guild general store. However, it was recently removed for unknown reasons.

Trivia

 * Silverlight can be traded on RuneScape Classic.