H&A Cushion Cut Sellers

[mercurial_dirigible]

I am looking at ~1.3ct H&A cushions and have noticed this is a bit of an awkward size with most stones falling around 1.0ct or 1.5ct.

So far I am watching Brian Gavin, Blue Nile and Good Old Gold. Are there any significant differences in quality between these three retailers / manufacturers, and are there any other sources I should be considering?

Thanks for the help.