Turquiose inspiration for this tufa heart adjustable ring is what it took to bring all these elements together. Hubrebi turquoise that was cut and polished by trusted lapidarist near Albuquerque NM Tufa cast is an ancient casting technique of carving tufa stone, melting silver in a crucible to pour into the prepared tufa casting. I utilized fabrication to attach the bezel, heart and double half round shank to bring this all together. So many techniques for such a great piece. Confort band fits sizes 6.5 - 8