Well, running a quick PS search for comparable AGSO diamonds, I found a 0.602ct H-VS2 Expert Selection at Whiteflash with a Pricescope price of $2084 (and Pricescope wire price of $2021) - http://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-2680233.htm - so price to price, the JA stone seems reasonable. However, for myself, I prefer the cut parameters of the WF stone and much prefer WF's upgrade policy as compared to JA's... that said, the JA stone looks good.