During the rebuilding of the realm, at around midnight there were reports of a transparent or translucent object glittering and bright spotted emerging from the seven sugar palms. It drifted in the air above the Mekong every night until near dawn when the crystal-like object would then float back into the seven trees from whence it came. Lord Chanthakinnaree named this auspicious omen Keo Mukdahan (แก้วมุกดาหาร) or the 'Pearlsmouth Crystal' as he had founded his realm on the banks of the Mekong where the mouth of the stream Bang Muk (or 'Pearlhaven') was located, in which people had discovered pearls ("muk"; มุก) in clams there. "Mukdahan" can refer to most any semiprecious stone resembling the pearl having a grey dull color, and not necessarily the pearl oyster, "Pinctada margaritifera". Lord Chanthakinnaree then renamed the realm Mueang Mukdahan, as from the Fourth Month of the Year of the Pig, Year 1132 of the Chulasakarat (Minor Era), 2313 of the Buddhasakarat (Buddhist Era or BE) of the Buddhist calendar. The realm of Mukdahan at this stage covered both sides of the Mekong and reached the frontier lands of the Vietnamese (including the Laotian province of Savannakhet).