by mcmsinger » Oct 20, 2013 Hi, Give me a opinion on this 2.22 carat blue sapphire. They claim that it is natural, untreated in any way and unenhanced in anyway. It is an oval cut blue sapphire from Sri Lanka. It is medium cornflower blue with some very slight violet. The clarity is VVS1. How much do you think is a fair price per carat for such a stone? Picture below attached. Thanks for your help!