Felidae's sparkling crystal amulet

Description:	The amulet of Felidae's origin are undoubtly from Felidae herself. The legendary sorceress and queen of the Savage Coast. The amulet is a blue sparkling crystal, that seem to be pulsing with some magical energy. The crystal seem to be loose maybe you can turn it. The necklace is a thin nullium chain and if you look closely it full off intricate patterns.
Armour type:	Amulet
Stats:	five versions: +4 Hit, +invoke prots special +4 Avoid, +invoke prots special +4 Dam, +invoke prots special +8 Dex, +invoke prots special +8 Con, +invoke prots special
It looks	Light weight (1.56 kg)
Sacvalue:	708k (con), 703k (dex)
It is called	Felidae's Amulet and identified as 'amulet', 'sparkling crystal amulet', 'felidae's amulet' and 'crystal amulet'.
It takes the following slot:	Amulet
Made of:	crystal
Size:	Missing size
Quality:	great
From:	Melkior, Savage Coast
Other info:	You can 'turn crystal' every ~10-15min for a random spell effect, at least these spells are possible: Airsteel, Bearskin, Displacement, Force absorption, Forget, Frost insulation, Heat reduction, Magic dispersion, Mind development, Protection from aging, Psionic shield, Regeneration, Shadow armour, Shield of protection, Stoneskin, Toxic dilution and Unstun.