Hi my understanding of Blue John is generally translucent not transparent so not sure what you have there check out some of the images on the site below thanks
Yes but the stone in the ring of your photo looks like it is transparent so just thinking have not seen blue john anywhere that was transparent may be someone from that area may be able to give you more of an idea
thanks
Hi, as far as I know ‘Blue John’ term is used for flourites which show angular or curved color banding with colorless backgorund.
Personally, I don’t have a significant experience with them but I’ve seen some of this variety. And according to my observations I think you can identify it by its appearance.