| Full Name: | Nephrite |
| Significance of Name: | type of gemstone |
| Alias: | Masato Sanjouin (anime) |
| Age: | estimated 19 |
| Division: | North American |
| Powers: | shadow (manga), star reading (anime) |
| Representative Color: | red |
| First Manga Act: | BSSM Volume I Act 3 |
| First Episode: | "Girl Power! The End of Jadeite" (25) |