The Saffer Crystal (青金石; "Seikinseki") was the name of Sailor Galaxia's Sailor Crystal in the manga. It was one of the most powerful Sailor Crystals and the most destructive Sailor Crystal in the galaxy. It was reddish-orange in color and was mounted on her brooch, which was placed at the center of her chest on her sailor fuku.
With this crystal, Sailor Galaxia was able to use the powers of other Sailor Crystals from all over the galaxy that her followers had collected in Garden Crystals. It also appeared to be part of a transformation brooch for Galaxia to change into her sailor fuku.
- "Saffer" is an old English word that can refer to either lapis lazuli or sapphire, but "青金石" (seikinseki) means "lazurite" in Japanese.