Black Gem

Black Gem (黒い宝石) is a type of fungal growth native to the New World.

Description
On his visits to Arwintar, Pe Riyuro would bring this item for Jircniv Rune Farlord El-Nix.

Appearance
These mushrooms are known to be fragrant and plump.

Abilities
While the overall benefits of Black Gem are unknown, though it is regarded as a luxury item.

Trivia

 * Judging by their description, its possible they are similar to truffles which are also known as black diamonds.