On the 1st Floating Island (Waterfall Island), there are several of these stones available to be mined.
Drops 2-5 Stone
When looked at, these stones seem to have the same "jutting rock" style as the "Crystal Lode". However, the Feather Stone seems to be a little smaller then the Crystal Lode, and the Feather Stone also seems to have a given texture, "Stone", and it also is white in color.
- In the Emerald Update, some of the feather stone on the Ice Floating Island were changed into crystals due to how hard they were to obtain.
- In the Silent Update, these gave 2 EXP, before the Silent Update these stones gave none.