Diamonds in Yellow and Blue Kimberlite

I am posting a video of my findings regarding a comment posted to my blue clay video. The comment suggested the blue layer could be a part of a decomposing kimberlite pipe. After reading it, I did a lot of research and, indeed, there is a layer of yellow soil, dry clay and sedimentary rock above the blue clay. Not in all places, but many. The yellow soil becomes thick sticky yellow clay as soon as water touches it is. The rock I show in the video has small blue-ish crystals in it. I found it and others in the creek. The crystals are also in the blue clay grit layer as well. Are they diamonds? If so, how do I find out?

Видео Diamonds in Yellow and Blue Kimberlite канала jeremy kesler