Ammolite is an opalized ammonite shell with intense colourful flashes.  You will be purchasing the exact Ammolite shown in these photos and video.  This one has lighter white and purple with some red flashes on it. 
 
Ammolite Healing Properties:
Third eye chakra
Converts negative energy into a spiral of positive energy
Helps one release mental blocks and obsessions 
Feng Shui masters believe Ammolite stimulates the flow of qi (life-force), through the body
 
You will be purchasing the very stone pictured in the photos.  Please note, that due to screen resolutions, colours may appear differently than what is photographed.