Blue Crystal

The Blue Crystal, also known as the Maboroshi no Aoizuishou (幻の青水晶; meaning "phantom blue crystal"), was a jewel which appeared in Act 4 of the live-action series. It was owned by Yuka Sakuragi, and Luna, Usagi, Ami, Rei, Mamoru, and Nephrite all suspected that it was the Silver Crystal.

One of Nephrite's Youma took over Yuka at the party she was holding to unveil the crystal. Under its control, she stole the crystal and attempted to deliver it to Nephrite. After the Senshi, Tuxedo Mask, and Nephrite fought over the jewel, it was revealed to be a mundane, yet still famous crystal, and not the Silver Crystal after all.