7a0fbbaa_Gems___Dota_2_Wiki__Gem_Type
[Quality Granted] - [Hero-specific] No [Explanation] These gems alter the color of an existing Unusual particle effect on the item. [Gem Type] 
Prismatic Gem
E t h e r e a l G e m
P r i s m a t i c G e m
K i n e t i c G e m
I n s c r i b e d G e m
S p e c t a t o r G e m
A s c e n d a n t G e m
A u t o g r a p h R u n e
Gems - Dota 2 Wiki
Gem Type