Solarius shield

The Solarius Shield is a cosmetic weapon accessory available from Solomon's General Store for ?? Runecoins, or 176 for members. It can be equipped using the "Customisation" setting in the Worn Equipment tab. It cannot be used in PvP, as it could be used to disguise a player's weapon and confuse their opponent, but it can be used in dungeoneering.

Controversy
During the Pactbreaker Longsword's initial release, many players bought it expecting that it could be used with all commonly used one-handed slashing weapons such as the Abyssal whip when it in fact cannot be used with certain one-handed slashing weapons. This sparked some controversy as the description says that the effect requires a "one-handed slashing weapon", which the Abyssal whip technically is.