|Mass: 10.0 kg||Volume: 1 L|
Jasper gems are normal gems, purchased by markets on Crimson Island (on Cerulean and Meridian) and Morgan Island.
Jaspers were used in the Mad Sloop Race around the Midnight Ocean. The event had to be cancelled due to unforseen circumstances, but a few of these gems made it into public circulation, and were subsequently pillaged from brigands. No market on Midnight bought these gems, and they disappeared when a ship's state reset, just as any other gem.