Looking at Opals Under UV Light

In the video, we have a total of three opals. The yellow one comes from Montana and I am not sure what type of opal that is--it was sold to me as an opal for less than $1 and I think it was badly damaged. I decided to keep it. 



The second one glows vibrantly and its a Hyalite opal--one I intend to wrap and sell. I have some for sale already. The other opal is a black opal that I picked up at a gem show. It has red and green flashes and both it and the Hyalite have the matrix which is the rocky part. 

Here is a photo of the Hyalate before UV is applied. 




And after UV light is applied.


The photos were taken with my iPhone 7 and a macro lens attachment.