Currently (R25 in November 2015) armor merely protects your player-character from the impact of physical hits from creatures, reducing the damage inflicted on the character. Lumite armor is the fifth (tier) and best armor-type that you can craft in Creativerse. You cannot find any already crafted Lumite armor-pieces in the game currently (except for those crafted by other players perhaps). The crafting recipe for Lumite Breastplates is unlocked when taking or crafting a Diamond Breastplate for the first time, which was unlocked by taking an Iron Breastplate.