A necklace in the shape of Rimuru's Slime form. It's said that the dwarves that follow Rimuru made it from Magic Ore that's particularly rich in magicules. It was a bit embarrassing for the real Rimuru even though he was very honored, so he didn't allow them to mass-produce it.
Attributes
Attributes: Max HP Up, Initial Jewels Up, DEX Up, Evasion Rate Up & Enables Master Ability "Tempest's Craftsmanship" when equipped on That Time I Got Reincarnated as a Slime collab units (Raises own PATK/PDEF/MATK/MDEF/DEX after appearing on map)