What is this icon in gummi phone menu?

[lucky.peic]

Hi, i have noticed i have locked feature in gummi phone (see screenshot), does anyone know what it is and how to unlock it?

Screenshot (image was too large to attach to this forum so i uploaded it to imgBB): https://ibb.co/FHV5yFr


EDIT: I managed to upload screenshot as attachment by compressing it, here it is

 

[Oracle Spockanort]

That is the Synthesis section which is unlocked by synthesizing an item at the Moogle Shop

 

[lucky.peic]

Thanks