Blue Gems affect INT, MP, and spell levels. They can be fused to create new Blue, Green and Purple gems. There are 33 Blue Gems available, one of which is exclusive to Pop. They can be both unrefined and refined.

	Size	Gem Name	Obtained from	Effect
1		Crystal of Lore	750	INT (spell damage) +4
2		Unusual Power	Talk to Moti after completing 20 Multiplayer Games	Higher max MP the more you complete areas in multiplayer
3		Unusual Lore	Talk to Moti after completing 30 Multiplayer Games	Higher INT the more you complete areas in multiplayer
4		Light on a Child	Pop subquest	Flail ATK +20, INT and MND +10
5		Salamander’s Favor	5000	Salamander’s spells reach level 2
6		Undine’s Favor	5000	Undine’s spells reach level 2
7		Gnome’s Favor	4000	Gnome’s spells reach level 2
8		Jinn’s Favor	4000	Jinn’s spells reach level 2
9		Pride of the Spirits	12000	All elemental spells reach level 2
10		Crystal of Power	1000	Raises max MP by 30
11		Dryad’s Favor	5000	Dryad’s spells reach level 2
12		Luna’s Favor	5000	Luna’s spells reach level 2
13		Wisp’s Favor	4000	Wisp’s spells reach level 2
14		Shade’s Favor	4000	Shade’s spells reach level 2
15		Might of the Spirits	12000	All elemental spells reach level 2
16		Bond of Salamander	11000	Salamander’s spells reach level 3
17		Zeal of Salamander	8000	Salamander’s spells consume 40% less MP
18		Bond of Undine	11000	Undine’s spells reach level 3
19		Zeal of Undine	8000	Undine’s spells consume 40% less MP
20		Bond of Gnome	11000	Gnome’s spells reach level 3
21		Zeal of Gnome	8000	Gnome’s spells consume 40% less MP
22		Bond of Jinn	11000	Jinn’s spells reach level 3
23		Zeal of Jinn	8000	Jinn’s spells consume 40% less MP
24		Bond of Dryad	11000	Dryad’s spells reach level 3
25		Zeal of Dryad	8000	Dryad’s spells consume 40% less MP
26		Bond of Luna	11000	Luna’s spells reach level 3
27		Zeal of Luna	8000	Luna’s spells consume 40% less MP
28		Bond of Wisp	11000	Wisp’s spells reach level 3
29		Zeal of Wisp	8000	Wisp’s spells consume 40% less MP
30		Bond of Shade	11000	Shade’s spells reach level 3
31		Zeal of Shade	8000	Shade’s spells consume 40% less MP
32		Soul of the Spirits	4000	All elemental spells consume 10% less MP
33		Zeal of the Spirits	Gold Rank for Path of Life	All elemental spirits consume 30% less MP
34		Bond of the Spirits	Gold Rank for Ruins of Illusia	All elemental spells reach level 3

Blue Gem Fusion

To help reduce the length of this table and make it easier to use, the fusion of blue gems involves dividing the basic Elemental Favours into two groups, depending on their Elemental. The first four you get in the game make up one group, the last 4 make up the second group. Therefore we end up with:
Group A: Salamander, Undine, Gnome, Jinn.
Group B: Dryad, Luna, Wisp, Shade.

Fused Gem		Cost	Component Gem		Component Gem
	Pride of the Spirits	12000		Any Group B Elemental Favour		Any Other Group B Elemental Favour
	Crystal of Power	1000		Crystal of Lore		Crystal of Lore
	Might of the Spirits	12000		Any Group A Elemental Favour		Any Other Group A Elemental Favour
	Bond of ELEMENTAL	11000		ELEMENTAL’s Favour		ELEMENTAL’s Favour
	Zeal of ELEMENTAL	8000		ELEMENTAL’s Favour		Crystal of Lore
	Soul of the Spirits	4000		Any Group A Elemental Favour		Any Group B Elemental Favour