Really original take on the theme and cool idea for a game.
I feel the one thing it's missing is a sense of urgency. Puzzle games like this can really benefit from a simple clock of some sort that gives the gameplay a more challenging feeling. Not sure how you'd justify it in terms of game logic. Maybe the customers bringing the relics could get fed up of waiting and take their relics to your rival alchemist in town if you don't appraise them in time.
Check out the point and click game for this jam 'Fate of Humanity' I feel that took simple puzzle challenges and set them against a clock that made the whole game come together nicely.