Tibetan OM Mantra Gau Box Pendant Handmade Turquoise Pendant. This Tibetan OM Mantra Gau Box Pendant was handmade by the Tibetan craftsman in Nepal from stirling silver and turquoise. Size: 3.80 cm(L) x 2.80 cm(W) x 1.60 cm(H) , Weight: 18g.