The Elements of Harmony are supernatural artifacts that each represent a different element of friendship.
There tends to be only one wielder per element at a time.
The three gems picked up by Sunny and her friends seem to be the equivalent of the Elements of Harmony, except they represent each of the three pony races: one for earth ponies, one for pegasi, and one for unicorns.
Generosity
The current holder is unknown.
The previous holder was Rarity.
Honesty
The current holder is unknown.
The previous holder was Applejack.
Kindness
The current holder is unknown.
The previous holder was Fluttershy.
Laughter
The current holder is unknown.
The previous holder was Pinkie Pie.
Loyalty
The current holder is unknown.
The previous holder was Rainbow Dash.
Magic
The current holder is unknown.
The previous holder was Twilight Sparkle.
