The divine diamond (one of the fifteen divine gems; see HELP GEMS) carries the gift of eternal mana, as always it did: this means the winner of this gem will be at maximum mana ALL of the time, no matter what mana-draining defences, countermeasures or attacks are faced. There are an assortment of DIAMOND powers also wielded by the gemholder, all relating to mana and the mind.
THE DIAMOND GEM QUEST begins with the cornelian prize-giving at 11pm on July 14th. See RULES or HELP EVENTS for further info on the Diamond Gem Quest itself and rules, teams and format.
The "divine diamond" is one of the fifteen divine gems. Winning it not only gives the victor contendership (see HELP CONTENDERS and HELP ORDINATION) but also provides a range of powers as per all of the divine gems - the greatest and most influential of Avalon's artifacts. The diamond's core powers are eternal mana and subconscious equilibrium. Eternal mana means your mana will never drop below its maximum, no matter what draining defences or pressures/attacks are made on your mental health. Subconscious equilibrium is no less significant but details can only be known unto the winner of the Diamond gem quest.
See HELP EVENTS, HELP GEMS, HELP GEMQUESTS and HELP GEMHOLDERS for context. Details of the Divine Diamond Quest will be posted here by July 12th 2012.