There is commonly confusion over display specifications. Many people do not understand the difference between color gamut and color resolution. And it is understandable that a non technical person might not understand the difference between hardness and toughness or the difference between an isotropic glass and an anisotropic transparent crystal. However, a display being fundamentally an optical device, when the discussion turns to a new material in the optical chain, it is amazing that the new material's optical performance could be so widely ignored. In GTAT's promotional literature, they did publish its "index of refraction", for all to see (... that particular page seems to have been removed from the web site. "Oops!.. Sorry about that. The page you requested cannot be found.") However the format of the publishing indicated that "more is better" even though a higher index is exponentially more surface reflection. In "More is Better, " I detail the problems mobile displays have with surface reflections; how that is the limiting factor on current mobile LCD performance. The amazing hype regarding sapphire leading up to the iPhone 6 announcement just goes to prove that no one actually reads specs.
Update 10/8/14 GTAT filed for chapter 11 on 10/6/14 The stock is now selling below $2 and had been as high as over $20. Its market cap is now just under $240 Million.