Stats

Character Stats
All player characters have a number of vital statistics used to determine everything from combat damage to loot drop chances. The stats can be broken down into the following categories:
 * "Natural" or "Level" stats (POW, VIT, INT, SPD, LUK)
 * "Final" stats (HP, ATK, DEF, INT, MEN, SPD, LUK)
 * Elemental affinities (FIRE, WATER, LEAF, LIGHT, DARK)
 * WEIGHT, which affects your MOVE and TACKLE stats

Natural Stats
Natural Stats are the five stats you allocate each time you level up. Each stat corresponds to at least one final stat, but does not appear to do anything beyond affecting those other stats. Stats marked with an 'n' indicate that they are the "natural" version of that stat, as some stats share the same name.
 * POW x 10 -> ATK
 * VIT x 10 -> HP
 * VIT x 10 -> DEF
 * INT x 10 -> INT
 * INT x 10 -> MEN
 * SPD x 10 -> SPD
 * LUK x 10 -> LUK

Final Stats
Final stats are the numbers used in the game's moment-to-moment calculations. While they are affected by Natural Stats, they can also be modified by Skills, Gems, and Equipment.

Deriving Final Stats
MOVE and TACKLE are complicated, but the basic gist of it is that as WEIGHT increases, TACKLE also increases, but MOVE decreases.
 * ATK = POWx10 + RUBY + EQUIP
 * HP = VIT x 10 + EQUIP
 * DEF = VIT x 10 + DIAMOND + EQUIP
 * INT = nINT x 10 + AMETHYST + EQUIP
 * MEN = nINT x 10 + EMERALD + EQUIP
 * SPD = nSPD x 10 + AQUAMARINE + EQUIP
 * LUK = nLUK x 10 + ROSEQUARTZ + EQUIP
 * WEIGHT = combined WEIGHT of Weapon/Armor/Shield/Accessory
 * MOVE = (-3 * (WEIGHT^2) + 2000 * WEIGHT + 13,750,000) / 200,000
 * TACKLE = (-3 * (WEIGHT^2) + 16000 * WEIGHT - 7,250,000) / 200,000