The Ruby Blade (ルビーブレードrubiibureedo) is Cure Ruby's purification weapon.
Like Cure Diamond's Diamond Spinner, the Ruby Blade comes with Cure Ruby's abilities on its own. It can be used for Cure Ruby's main purification attack, Ruby Slash, or with the Garnet Card's power, Triple Ruby Cross. As its name implies, the Ruby Blade is a sword ( a katana to be exact) and besides for attacks can be used as a sword. The Ruby Blade can also be summoned when Cure Ruby is in her civilian form.
The Ruby Blade looks like a katana, but with a swirled handle, a heart