Large natural blue turquoise cabochon specimen from Taubert Hills $161 for 45.9 carats untreated & un-backed Nevada turquoise. 36.6×31.6×5.8 mm A large turquoise vein specimen found at the Taubert Hills deposit near Yerington Nevada, fashioned into a stunning blue turquoise cabochon specimen with red spiderweb matrix. This turquoise cabochon is un-backed, solid and untreated. nvctadmin Blog, From the Lapidary Shop, Uncategorized Comments