Ruby(ルビー) is one of the Birth stones from Nage Libre Seijaku no Suishin. It will be your character's stone if July is chosen for the birth month.
Stones
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| Birth Stones |
| Lapis lazuli- Diamond- Ruby- Aquamarine- Opal- Agate- Topaz- Amethyst- Emerald- Moonstone- Sapphire- Garnet |