Certified no heat treatment. Really pretty red spinel. It’s a true pigeon blood red no pinkish modifier. High luster stone. There are small duct like inclusions present inside but there are only visible upon magnification with light.  Totally eye clean stone with slight inclusion visible only when louping with light. The stone is better than eye clean. Rich color red.   Full color flashing back through the stone.   Please look through the video and photos.  I’m not very good at taking video or photos but when you only pick the best stuff it looks good at every angle.  Look for the internal flash of the color when looking at video.  I do not talk in my video hyping up the stone.  I let the stone show you the magic and you decide for yourself.  I try to bring honest descriptions and not over describe my stones.