Hope Diamond (ホープダイヤ, Houpudaiya)? is a demon in Persona 5.
Theis a grayish-blue diamond said to bring curses to the owner.
"Unlike its name suggests, the Hope Diamond is a cursed jewel that brings ruin from one owner to the next. A few supposed victims include King Louis XVI and his wife, Marie Antoinette."
Hope Diamond is the sixth Persona of the Death Arcana and can be found in the Sheriruth area of Mementos after clearing Shido's Palace, from floors 7 to 13. It is the first Persona to learn its various passive skills, however as it cannot be used in battle, these skills must be passed on through fusion to be utilized by the protagonist. When itemized through Electric Chair execution in the Velvet Room, Hope Diamond yields the Hope Diamond accessory, which increases all of the wearer's stats by three and adds the Regenerate 3 effect.
The most effective way to capture this Shadow is by Downing it using the protagonist's Down Shot gained from the Tower Confidant. Barring this, Physical attacks with a High critical rate, such as Lucky Punch or Miracle Punch, can be used to knock it down.