Rarities:
Common(White): No Requirements, Only Physical Damage or Defense Stats
Uncommon(Green): No Requirements, Double Stats of Duplicate Item in Common Rarity
Rare(Light Blue): No Requirements, Got Magical Stats, and Attribute Stats of 10 or so
Unique(Dark Blue): No Requirements, More Than 15 Points in Attribute Stats
Epic(Purple): No Requirements, More Than 30 Points In Attribute Stats and Have a Special Effect.
Legendary(Red): Have 1 or 2 Requirements, Got 2 or more Special Effects
Mythical(Orange): 2 or 3 Requirements, 5 or more special effects
Divine(Goldish Yellow): More than 3 Requirements, Limited And Super Rare!!! Super Rare as in Impossible to get.
Forged Items: Sometimes have requirements when they're Common~Epic Rarity. They are usually Stronger than dropped items of same rarity but weaker than dropped items whose rarity is a level higher.
Evolvable Items: Got Requirements, Got Attribute Stats, They Don't Start at any Rarity and only at Growth Rarity, they can evolve almost Limitless.
There'll be more things for you readers need to know about, but I somehow can't of any of them, I'll update this sooner or later.