This piece has to be seen in person to be believed. It is an absolutely mesmerizing floater crystal with INCREDIBLE glassy luster that looks like it was just windexed and polished (but hasnt been!), and fascinating inclusions. It has yellow color due to an odd claylike material included within, overlaying internal matrix or primary generation of quartz. On top of that layer, rest SHARP anatase crystals, some of them also twinned, to 1 cm in length. It is like looking at them down through a swimming pool, of such clarity that you wonder if it is glass or water...LITERALLY, this is a mesmerizing piece and one of the most interesting included quartzes I have handled, if not the most expensive by a long shot.