Have you run it through the HCA?
The well matched minor facets make it work. IS image trumps hca.
I cant run comps for you but its easy to do using the ps search engine.
The is image showing there are no issues beats the hca score being aver 2.
If you are willing to give up some clarity and spend $700 more, you could squeeze into an eye clean super ideal H&A stone.
Diamond | 1.515 ct H SI1 A CUT ABOVE® Hearts and Arrows Super Ideal Round Cut Loose Diamond AGS Certified | 4369221
This Whiteflash A CUT ABOVE® super ideal cut hearts and arrows 1.515 carat H color SI1 clarity loose diamond is graded by the American Gem Society (AGS) Laboratories. | 4369221www.whiteflash.com
I did some searching. I cannot find anything better at that price for a 1.5c+ H+ and VS+.