A question on diamond fire

[TimMD]

Video I made shortly after receiving my ring a few months ago, just outside my front door in natural lighting, was about 11am at time of video.

 

[davidd]

Thanks all for your great input.
Since i posted my question, I have paid more attention to the lighting and how clean the stone is and in the right conditions (out in the sun or in a restaurant) I've been able to see quite a lot of fire.