Board Thread:General Discussion/@comment-26471369-20150619203251

I believe that the placement of a gem gives the gem a special ability exclusive to the gem.

Forehead: If the gem is on the head the gem has a pocket dimension Pearl has been shown summoning items from her gem and i believe that Peridot's weapon is no the EMP device and she summoned it from a pocket dimension.

Hand: If the gem is on the hands the gem has some sort of extra physical capability like Ruby had super strength as seen in "Jail Break"  and Sapphire had super speed in the same episode and Garnet is shown to be able to swim in lava.

Chest: If the gem is on the chest the gem has proficiency at shapeshifting as seen with Amethyst.

Back: If the gem is on the back the gem has control over a certain element like Lapis can control water (Hydrokenesis)

Nose: If the gem is on the nose the gem has weapon proficiency as seen with Jasper having very good fighting skills

Navel: If the gem is on the navel the gem has healing capabilities as seen with Steven and Rose in "An Indirect Kiss"

Hope you life it please critique! 