This pair weighs 28.1 carats and each cab measures about 3cm X 1cm. They are priced at $15/ct or $421. I have assigned a TG of 83.50 or HG High Grade. They are not treated and unbacked. I bought this turquoise from Ron Alexander who cut the cabs. This is exceptional turquoise sourced from one of the men responsible for bringing Chinese to the US in the late eighties.