In order to get any level 3 jewel you need to collect:
- Red Jewel Lv.1 (20) = Red Jewel Lv.2 (1)
- Red Jewel Lv.2 (10) = Red Jewel Lv.3
- Black Jewel Lv.1 (20) = Black Jewel Lv.2 (1)
- Black Jewel Lv.2 (10) = Black Jewel Lv.3
- Blue Jewel Lv.1 (20) = Blue Jewel Lv.2 (1)
- Blue Jewel Lv.2 (10) = Blue Jewel Lv.3
- Gold Jewel Lv.1 (20) = Gold Jewel Lv.2 (1)
- Gold Jewel Lv.2 (10) = Gold Jewel Lv.3
You will find information about the drop in the section: Game System / Drop