Takes place during the events of 7DSJ: Book 3
A long time ago, Raspberry Beryl used her gift of dark magic to create fake precious stones, selling them for cheap so she could have enough money to feed herself. Until her secret was found out and she was run out of town, only to start the cycle anew elsewhere - such was the life she felt cursed with as the descendant of King Sombra.
Nowadays, her fortunes have reversed - friends, family, a warm home, and a position where her unique powers of darkness can be put to use in protecting ponies as opposed to harming them. Everything seems to be going her way until dark crystal randomly erupts from a small farming community. By investigating the disturbance, she may brush with remnants of her past...and another shadowy remnant of the legacy left by her corrupt ancestor.