This cab weighs 9.1 carats and measures 2.25cm X 0.75cm. It is not treated and lightly backed. It is priced at $20 a carat or $182. The stone shows a bright Ithaca Peak blue color with desirable pyrite and quartz in the matrix.The white spot in the photo is from the camera flash. I bought this cab from Mike McGooy. I have assigned a TG of 85 or HG High Grade.