Prodigious Alchemist's Necklace of Holding (Epic)

[Prodigious Alchemist's Necklace of Holding (Epic)] - An amulet awarded to a prodigious young alchemist upon completion of a trial. An ornate creation of high craftsmanship made of metal attuned to the space affinity, holding a spacegem in place. Allows the user to store items in a small pocket dimension found within the gem. Due to the nature of the gemstone used, living, non-sentient entities can be stored without harmful side effects in temporal suspension. Enchantments: Alchemist's Spatial Storage. +25 Wisdom.

Requirements: Soulbound.

Obtained upon completing The Malefic Viper's dungeon after Jake cured himself with his chaotic concoction.

The size of the pocket dimension seems to be vast. The only known limitation of the necklace is its inability to store the gates of the Count's chamber from the Treasure Hunt.

Upgraded in chapter 446 to:

[Heart of the Alchemist (Legendary)] – Once merely proof you were a prodigy, now even more as you have shown you have the heart of an alchemist. An ornate creation of high craftsmanship made of metal attuned to the space-affinity, holding a Space Heart Gem in place. Innate power still dwells within the Records of the necklace yet to be uncovered. Allows the user to store items in a medium-sized pocket dimension found within the gem. Due to the nature of the gemstone used, living, non-sentient entities can be stored without harmful side effects in temporal suspension. Allows the user to directly deposit beneficial products into their own bodies with a slightly improved effect (can only be used once an hour). Enchantments: Alchemist’s Spatial Storage. Innate Consumption. +500 Wisdom, +450 Willpower, +400 Intelligence. Requirements: Soulbound

The Nalkar jeweler who upgraded the necklace, Mistress Rubylake, comments that it is such a powerful item that she is surprised that anyone below peak D-grade being able to use it without their soul being overburdened. Jake was level 152 at the time.