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Septium (七耀石, sepuchiumu) is a grouping of seven types of gemstones, found and actively mined across Zemuria. Septium have been viewed as symbols of mystery since ancient times. Their value as a resource increased drastically when the technology to refine fragments of septium, also known as sepith (七耀石の欠片, sepisu), into quartz was developed. Larger chunks of septium are refined into jewels.


No. Element Official name Colour Sky Crossbell Cold Steel (E/J) Akatsuki
1 Earth Amberl Brown Earth (Sora Element).png Earth (Crossbell Element).png Earth (Sen Element).png/Earth J (Sen Element).png Earth (Akatsuki Element).png
2 Water Sapphirl Blue Water (Sora Element).png Water (Crossbell Element).png Water (Sen Element).png/Water J (Sen Element).png Water (Akatsuki Element).png
3 Fire Carnelia Red Fire (Sora Element).png Fire (Crossbell Element).png Fire (Sen Element).png/Fire J (Sen Element).png Fire (Akatsuki Element).png
4 Wind Esmelas Green Wind (Sora Element).png Wind (Crossbell Element).png Wind (Sen Element).png/Wind J (Sen Element).png Wind (Akatsuki Element).png
5 Time Nohval Black Time (Sora Element).png Time (Crossbell Element).png Time (Sen Element).png/Time J (Sen Element).png Time (Akatsuki Element).png
6 Space Goldia Gold Space (Sora Element).png Space (Crossbell Element).png Space (Sen Element).png/Space J (Sen Element).png Space (Akatsuki Element).png
7 Mirage Argem Silver Mirage (Sora Element).png Mirage (Crossbell Element).png Mirage (Sen Element).png/Mirage J (Sen Element).png Mirage (Akatsuki Element).png