Just a quick google (flash jewel quest II) and I found:
www.flash-games.net/online/1243/jewel-quest.html
Looks like version one, but they might have II. Disable flash support then go to the website. MicroB will ask you what to do with the flash file and save it to disk.
Re-Enable Flash support and you can open file, or click on the file from file manager for offline play.