Voadam touches the gem. Unlike its green counterpart that now lies broken and strewn along the water-logged floor in front of the eastern doors, the blue gem seems--to Voadam's eye--to be of substance and value. Fully some three inches across, the gem is faceted and has been polished to a gleaming luster. In the dim light brought forward by his glowing gold coin, Voadam makes out a flash of silver inside the gem. A star shape, done in either pearlescent white or silver, is hidden in the heart of the blue gemstone. Visible only upon close scrutiny, the inner heart of the sapphire glitters as a star might from the deep heavens. At Voadam's touch, nothing happens. The gemstone neither rattles, moves, nor does it thrum. Neither do the stone doors open.