Peridot Boxes can be dropped by all monsters. They require an Ornate Key to open, one per box.
There are 29 sets of outcomes. You can only get the same set once, but some sets are identical (see 2nd set for example).
Known drops include:
- 1x Pixie Dust
- 2x + 1x Diamond + 2x Shiny Ruby (2 set of outcomes)
- 1x + 2x + 1x
- 1x Mad Monocle