Imperfections in a gemstone do not always make it less beautiful or interesting. Cats eye in tourmaline that are produce by dense formations of growth tubes is a prime example of that beauty and interest in tourmaline.
The posted highly dichroic emerald cut is far from being a candidate to be cut into an cats eye. Its bright flashing medium tone value ends frame only a handful of perfectly formed absolutely parallel growth tubes. The dichroic a/b color, a rather pale pink with probably just a touch of brown, is the back drop for the flash of the growth tubes. Now if the growth tubes had been incorporated into the emerald cut at an odd angle, it would have not added much to the beauty or interest of the gemstone, but these growth tubes are exactly aligned with the edges of the finished gem. (All of this brought to you by a natural crystal that made it easy.)
At first you might miss the bright thin shafts of flash, but if you look closer they will peak you’re interest and enhance the eye clean, emerald cut, with the excellent crystal that makes the flash so bright. And even if an inquisitor doesn’t care for the effect, in an otherwise flawless gemstone, at least you had something interesting to say about your beauty. It weighs 3.44 carats.