Imbued Jewel of the Meticulous Miner

 is a Raw Material that can be socketed into non-artifact Crafted Ring or Necklace equipment items, with the Alchemy Skill.

Socketing a  into non-artifact Crafted Ring or Necklace equipment item will create a Ring of the Meticulous Miner or Necklace of the Meticulous Miner.

can be obtained by salvaging The Ring of an Unknown BMC Member. Artifact Salvaging Chance to yield an Imbued Jewel: