A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
Vora's Sa'angreal (TGS, Ch. 40) is one of the few sa'angreal the White Tower possesses and perhaps the most powerful, is in the shape of a white fluted wand, the length of a woman's forearm, made of an unknown material that resembles bone and ivory. It is kept in a plain polished wooden box (TDR, Ch. 18). It was used by the circle that healed Mat (TDR, Ch. 18) and by Egwene and her circle when they fought off the Seanchan (TGS, Ch. 40).